The pros and cons of the "nail polish trick" have been debated to death . . . I won't go into it again here, you can search the forums for it.
I've tried it, wears off fast and people look at you funny when they see "Autumn Red" nail polish on your work bench.
Some have good luck with it, others are like me . . .
Just order a bag of 12 from Rich or more if you wear them out fast.
They aren't expensive and "the right tool for the right job" and all that horse-hash.
Seems to me there's more wear done to those bushings pushing the bar in and out than actual use.
Something to always look for though, when you pop the bushings off the bar make sure you put them on right side up.
There is a gentle slope to them and you have to have the narrow end go in first. Easy way to tell, the narrow end has three mold injection "dots" on it; those go toward the pointed end, the end that goes into the arm holder in the bridge.
For years I tried to eye-ball the damned slope until someone pointed out to me the three "dots" are always on the narrow end. DUH! :-)
Makes them last a little longer, but they still wear out pretty quick if you case your guitar every time you're finished playing.
Anyway . . . call or email Rich, he'll hook you up. :-)