You do realize that slide to frame fit is way way down the list on things that make a 1911 accurate - or most hand guns for that part. The frame basically is the handle, mag holder and firing method. Once the firing pin drops it has little impact on the mechanics afterwards. Some will say that if the firing process causes the slide to move on top of the handle it can impact accuracy but the movement needs to be sizable and inconsistent.
In terms of real accuracy the barrel is the first thing, next would be be barrel to slide fit - including lugs, link and bushing. Trigger really does not increase accuracy - it does however make shooting it accurately easier. And of course the sights. And if you want to go way over the top look at the breach face.
I shot bullseye with a 45 back in the 70's. Some of the most accurate guns of the time had enough gap on the frame to slide that you could slide paper in between.
The slide to frame fit can be impressive when you see the oil literally cut off the as the edges pass, but while it illustrates wonderful craftsmanship,within reason it does not have a significant impact on accuracy.
So polish away, best case it might feel better or you might think it looks better but seldom will it make a shooter out of slug.