well, i got a practically free pair of stock reed cages sent to me, and decided to polish them and see what diffrence they were over stock which is what i have in there now, took out the dremel and a hour later i was done, anouther hour i had them installed and went for a ride, and damn, i didnt think it would be noticable, but it is, i think it grabs a little more on bottom -top, and the powerband flows better, i think everybody who had a dremel had to do this, took me 2 hours for everything, and the extensions i needed for the dremel was like 8 bucks total.
polished inside compared to stock
stock outside compaired to polished
polished side compaired to stock
...now go out and do it! p.s. my jettin changed and i need to go change it so it runs better again, which means the polishing prolly is doing more then what i felt!