Green Wheel bearing help

True, that's not really the part shops are "scared" of. When I try to explain that there's a measurement for end play involved, and that they need the tool for it, they're like ... hmmm, okay, if you have the manual I might be able to help you out ... not too confidence inspiring. What I want to hear is: "Oh yeah, I've done those before - no problem!".
Have you tried a transmission shop?
A dial indicator with a magnetic base is what you need.