Re: Just about to purchase. How to tell if the EZ-II trem has stripped baseplate?
If a screw has stripped out of the baseplate then the guitar cannot be intonated because you won't be able to lock the saddle in the correct position, so a saddle will be loose.
Look, these things are often overstated because some people are hamfisted morons and overtighten small screws which then snap or strip, I often see locknuts dramatically overtightened crushing the strings and grooving the nuts. If the trem isn't damaged then it will work reliably, if it's already correctly intonated then as long as you don't change string gauge then you shouldn't need to touch the saddles at all.
Competent guitar players don't necessarily make competent guitar techs, it takes mechanical sympathy and practice to get good at tech work.
Enjoy your guitar and don't fiddle with the trem if you're happy with the setup, it's very tricky to make a good setup even better without some fretwork first.