Re: Edge Zero Bridge
Just adjusting the action a few times with the strings to pitch is not enough to cause that much wear to the knives.
I've been doing it on my RG550 for the past 20 years and have little trouble with it. The guitar does go ever so slightly sharp on a pull-up, but not even enough that the average listener notices.
If your guitar is going badly out of tune, it's most likely something other than the knives.
Check that everything is tight, make sure the strings are stretched and you don't have to Chapstick EVERY time, I've found that once every year is plenty, if even that often, and even then, I haven't put any on my 550 in several years, and it's still fine.
Even putting a real Floyd (you can't, by the way) on there isn't a 'for sure' fix to a guitar going out of tune. The Ibanez Edge bridges, even though people aren't that happy with the Edge Zero, are some of the best on the market.
Again, check everything before you simply assume you've 'ruined' your knives by adjusting the action. I've done it so many times with zero problems I can't even begin to count, so I'm guessing you didn't destroy your knives just by adjusting the action and there's something else that's causing the problem.