I've found forums for playfields and for backglasses/translites, but nothing for ramps. This forum is for people looking to buy, sell or trade ramps. If you are looking to buy a ramp, post it here, but also post in the Freeplay40-ramps forum as he manufactures ramps for a given title if enough people are interested. Freeplay40 works closely with Larry at Starship Fantasy lrosent345 and Pinsider JodyG so that they aren't working on the same titles.
Here are links to other groups for parts seekers here:
Repro Ramp manufacturers:
Manuals and schematics:
SS Heads and Cabinets needed/Heads and cabinets available:
EM heads needed/EM heads available:
If you like working on project pins, check this forum: