Hello, I have a Godzilla premium that I just got new in the box last month. Set it up and had no issues for a couple weeks. We probably have over 100 plays on it at this point (haven't checked the counter) and I'm having an issue with where the building keeps getting stuck in the same spot.

When the building lowers all the way down to release the balls for multiball, it gets stuck while raising back up. The building is solidly jammed and the motor starts making a grinding sound as it's trying to keep pushing the building up. If I manually work the big screw in the back it unbinds and is fine again, until it lowers back down of course. It looks like it's pushed forward and it's getting caught on the lip around the base of the building. I can't figure out why the building is leaning forward like that. I've taken the mech out of the game and examined it and I can't find a reason why the building wants to lean forward other than there is some play in the mechanism which makes it seem a bit loose. I can't see where I could possibly tighten that up. I wish I had taken pictures last night but I was hoping I would just find a topic already explaining the issue, however I'm not finding one.

I found one thread talking about loose screws on the back of the building but there are no loose screws getting in the way here.

Right now I just have the building disabled so we can play the game.

Any suggestions would be very helpful!

Added some pictures although didn't take the mech out this time so it's kind of hard to see exactly what's happening. You can see from the picture under the playfield that the building is pressed against the playfield in the front. The only way to free it is reverse the stepper unit screw to lower the building until it gets loose and then manually raise it up. Of course the building has no problem raising up while the playfield is in the upright service position as it's not leaning forward that way.

Also I was wrong on my first post as the lip of metal is actually at the base of the 3rd floor. I can see how it's not flush with the front of the building. I'm assuming the building is leaning forward while being raised and then getting stuck on that lip of metal. Once fully raised up it seems there is plenty of clearance between the front of the building and the playfield, so it must only have a problem while raising up.

Once the building is raised up, it looks as if it has plenty of space

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I believe I have fixed the problem although I'm not sure I would recommend what I did.

Also this has nothing to do with the blue nubs, my nubs are actually black in my game and are where they should be.

So I continued on with my theory that the building is too loose, that's why it keeps leaning forward and getting stuck. I looked at where it attaches to the big screw that raises and lowers the building. There are two nuts that connect a plate that wrap around the screw which holds the big nut that big screw goes through. I thought maybe I should tighten those nuts on the plate, there are convenient holes in the bottom plate to get my nut driver through and everything.

This turned out to be a bad idea as one of the threads snapped when I over tightened the nut. However I also noticed the other nut was just spinning. Then I discovered the screws these nuts were attached to were actually riveted in. Not fun.

So I just decided to go for it and took the building out of the game. It was very tough getting the spinning nut/screw off, I didn't have the right tools so basically was beating and prying it off for an hour and bending all the metal and definitely felt like a hack operator, and wondered if I was going to be breaking my building beyond repair. I got lucky when the whole screw snapped off and left a nice hole to put a new screw through.

I removed the other broken riveted screw and now I have 2 screws with nuts in their place. Now I can tighten this whole base and now my building doesn't feel loose anymore. It's been raising and lowering like a champ.

I took a picture where you can kind of see the screws I replaced.

Overall I didn't have much hope of getting Stern to do anything about it seeming that their support number just tells me to send an email, which I did with no response yet. Also this really makes me not want to get a premium game with complex mechs again as although this is the most fun pinball I've ever played, the frustration this building has caused has really cancelled it out. I really have my doubts on how well this building is going to hold up long-term.

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Yep those would be the ones. Originally they are riveted in with nuts on the underside. In my picture you can see the screw heads are now on the bottom and the thread pokes through the top (just used whatever screw I had available and fits). You cant see it but I've added little nuts on the top to help tighten things up.

You can also see the metal is a bit bent from all my beating and prying on it at least that doesn't affect anything.