Question about frame grounding

they press out with some heat but i only do it to match good bushings in good cases, or remove good bushes from damaged cases, etc.

Hi SnoDrtRider , yes I have thought about that also . Should be easy to verify with an ohm meter . Thanks for mentioning that . If the leaves at the motor mounts were causing an issue , you should be able to test for that . 1lead on the stator and the other lead on the sleave ( clear bare metal ) you should be able to identify that easily . The ohm meter will measure the path of least resistance between the leads . So if your engine is out of the frame , very easy to check with a meter . Now lets say your engine is mounted and bolted into the frame and you want to check these leaves individually , not so easy as there may be 1 sleave where there is some corrosion and the others are good . What you might find is that it tests good as it's reading a different path than what you expect but overall the grounding circuit is good . So in my opinion the best most accurate time to check is when the engine is out of the frame then you would either eliminate or identify a problem .
Now I check mounts while engine is on the bench , after engine is bolted into the frame and lastly stator to coil after the coil is bolted down .