Hey guys, I was just wondering if you could help me out a bit here with my 450r I bought blown up. It has a big bore kit with a stage three HC cam and I believe it had a HR stroker crank. the bearings are ok but i'm replacing them anyway (with the ones that came with crank not OEM). I've read that the crank seems to vibrate with a big bore or sumn without being balanced. Just wondering how i'd go about balancing it or if I even have to get it balanced. This crank seized up from several metal shavings in it not sure how that comes in to play if it was off balance? Also if this means anything, the oil filter was pretty much coated in shavings. Any help would be great thanks!