My seller had bought a mod that he had not installed yet. I am still learning my way around with GB. I do not know what everything is called.
This mod is replacing the 2D buildings in the back with some 3D buildings.
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I installed the building that sits on the right side behind the pops and in front of the marshmallow guy.
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They are made by someone named Sam. This is all I know. I would like to talk with Sam if anyone knows how to contact him.
His installation instructions need to be modified. The instructions say to remove the ramp to install this mod in front of Stay Puft. You do not need to remove the ramp. Do not remove the ramp.
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Here is how to install this unit.
The slimer is attached to its rotating shaft with an Allen screw. Loosen that screw and swing Slimer out of the way. You can remove Slimer from the rotating shaft and lay him on the play field but it is not necessary. The rotating shaft is keyed so there is no way to reinstall Slimer incorrectly.
With slimer out of the way, you can access the 3 screws that attach the buildings to the top of the pop bumpers. Remove the buildings from the pop bumpers.
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With the pop bumper buildings out of the way, you can easily access the two small screws that attach the 2D buildings to their mounting tabs. A long shank #1 Phillips screwdriver would be best, although I did this swap out with a short shank screwdriver.
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So, EZ PZY, right? Nope. There is one more challenge. The factory 2D building measures .050" thick. The Mod buildings mounting point is thicker and measures approximately .110" thick. The Stern factory uses short screws to attach 2D parts to brackets. These screws are almost too short to install the 3D building.
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Both 2D and 3D buildings are shown here. You can see the difference in thickness.
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What should have been a 1 minute job to install this 3D building morphed into a 40 minute odyssey as I tried to get these screws installed. I finally had to get creative and make one of the screws a captive screw ( https://fastenerengineering.com/what-are-captive-screws/ ) to do this install.
These screws are very small. Like the screws you see inside a computer. I do not know where to source them. But if the 2 screws were 1/4" inch longer the install would have been a breeze. The short factory screws will make you cuss. If I had a long shank magnetic #1 Phillips screwdriver the install would have been easier, but I don't have such a tool and don't want to buy one.
Recap:
Do not remove the ramp. Swing Slimer out of the way, remove the pop buildings and pray for longer screws.
I hope this helps anybody else who might be getting ready to install these buildings mods.
I have not gotten to the buildings that are sitting behind the fire house.
It is a nice looking mod.
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Now, I need to make some airball protectors.