Quoted from drsfmd:
I installed my hardtop last night, and it went great. I wet sanded the inserts down to 2400 grit, and they look fantastic.
As I've begun the process of repopulating the playfield, I've noticed one problem-- the bottom of the metal ramp to the million point shot is slightly lower than the surface of the playfield. Has anyone else noticed this? Did it effect game play? I was thinking about making a flap out of a piece of spring steel. Thoughts?
Check out some of the hardtop install videos on youtube. Shims can be used, or as another alternative pouring some epoxy into that area to fill and even out, but that only works before it's installed......
In your case some thin styrene shims should work great.