Just got an Alvin G and Company "Pistol Poker" in for rebuilding. The flipper units and slingshots on the main playfield were pretty worn and had parts missing. Found out most of the parts for these assemblies are No Longer Available. So, I did some measuring and test fitting and found Williams System 11 flipper assemblies and modern Stern slingshot assemblies will fit and work fine in Alvin G machines and in particular, Pistol Poker. The Alvin G flipper assembly is an "odd duck" and uses weird sizes of flipper bushings, flipper shaft/bat, a strange flipper pawl, and goofy plunger/link. So, the owner decided to replace the two main flipper assemblies with complete Williams ones and the slingshots with complete modern Stern ones. I built new Williams assemblies from seperate Williams flipper parts we normally stock. I reused the original Alvin G flipper coil in the new Williams flipper assemblies. To center the flipper bushing of the new Williams flipper assembly in the playfield hole, I used a 7/16" socket slipped over the Williams nylon flipper bushing. Then I had someone hold the assembly in place while I marked all the mounting holes for the flipper baseplate.