Working on a Husqvarna 350 which I seem to have running fine but when I put the bar and chain back on the tighter I get the bar nuts the tighter the chain gets. When I get it all the way tight you can't turn the chain at all. I've checked the chain brake and that doesn't seem to be the problem. The clutch cover seems to rock back and forth when I tighten the nuts up like it's bowed or something. I had this problem a few years ago with one of these and can't remember what the solution was. I'll check the brake out again tomorrow just to be sure but don't think that's the problem...Help!