i know people have cut down their cans to make them shorties before and im debating doing this to my akras. being that i havent done this and i dont want to **** them up does it have to be done on one end or the other? its been many years since ive repacked an exhaust; and even then it was an old crappy d&d, and i typically change bikes so frequently i never kept one long enough to need repacking. my thoughts are to drill out the rivets at the bottom end of the can and pull it apart cut off the inner core as needed (probably doesnt matter top or bottom) then cut the cf with a nice hacksaw blade to make a clean cut. repack the can while its apart and rivet it back together at the bottom end. my reasons for the bottom end is that the carbon fiber is slightly discolored at the bottom end (on the bottom of the can that you cant see by eye which i imagine is do to the heat of the rc's exhaust) so id rather remove that portion than the upper portion. and being that its a carbon fiber sleeve does it have (or need) additional reinforcing where the end caps rivet to the sleeve or can i just pre-drill nice little holes for the rivets and not worry?