Quick question for some Stern Jurassic Park Premium/LE owners out there. About to get my machine and I want to my sure I have the best balls. After some research I found the "SILVERJET™ PREMIUM PINBALL". Link: https://www.marcospecialties.com/pinball-parts/PB116-SJ5
Will these work fine in the Jurassic Park Premium? This is my first pinball so I don't know much about the issue when it comes to magnetizing balls (I know JP Premium has a few magenets). Just want to make sure I have pinballs that will not cause any issues. Thanks in advance for your help.

Anyone know if this is supposed to be like this? Or is it missing a rubber piece?

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In everyones opinion, what is the best Underglow/Under Light kit for this pinball machine? Is there a kit to go with that might interact with the game (shaker/sound) in some form? Or should I just get some LED strips from amazon? Thanks in advance!

Has anyone had problems where the ball doesn’t roll out from the raptor trap when the door goes down? It gets stuck on the left side and you have to shake the machine for it to come out? See picture for example. Really slows down that intense multi ball! Any ideas on this? Any adjustments that can be made?

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This worked beautifully, thanks both for your quick help!

What is it that’s wrong?

Hi there! I seem to be having some issues with my T-Rex. I am walking through the steps of realignment. I am doing the horizontal motor test. It is saying “Please Wait: Homing Motors” and has been saying it for a while. How long is this supposed to take?

Yikes. Mine is not taking 15-20 seconds. It is going way longer. And not stopping. What should I do? I’ve only had the machine for a couple months. When playing the game it seems to be in a constant loop of moving head side to side, not coming down for mouth grab on multiball setup

Have done some more testing. It just seems to go left right left right, non stop. It seems like the motor works fine, but I’m thinking something is off with sensors, I have no clue. I can’t find any comparable posts with this issue.

Fix for:
“ PLEASE WAIT: HOMING MOTORS ” loop.
Or T-Rex going left and right loop.

Good news! I fixed it. Adding my fix to help put people who will surely have this issue in the feature.

There is a sensor that the T-Rex interacts with seen circled in the picture.

The red arrow that is pointing down is what the piece had been moved to. The green arrow is the direction I pushed it to get it back in place. Once testing the game it is working now.

I’ve contacted stern to see, Is there something that I need to tighten to make this a permanent fix?
Edit: Make sure to tighten the screw with an Allen wrench that is mentioned in the post below to make this a Permian to fix. Do both over tighten though, only tighten a little bit. If over tightened it will mess up the T-Rex Mech
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Awesome, thank you. I ended up figuring this out and was just coming back to note this.

Anyone know what this is for? In the back near the ambers. Is it a wire clip?

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