ILLusion said his got bad enough in 2 mags....so not long...
I don't have a single Hi-Capa with me right now so I can't take picture, but I have this from the 1911 slide:
Those interlocking feature are the lugs. Its on both the chamber and the slide. Note that the edge where it engages had been chamfered(this stock Nova slide comes with some chamfering, SD's and the AS' don't, you shouldn't need that extreme amount when you are working on your slide though. I'd post a pic if i can but i don't have my Hi-Capa here). Do the same thing (well not as much, but at the very least break the sharp corners on the SD chambers when they come stock). I would also try to debur most of the edges on where it contacts the hop-up mechanism. Sharp corner tend to catches on things especially considering the material differences.