hi everyone and thanks for looking hope you can help.? i fitted a spb jackshaft,but i found the chain on the drive side seemed way to tight and it seemed to be popping the bearing out on the drive side, so i tried to get the chain to fit better, id did but still seemed tight although the bearing this time wasn't popping out, so thinking id cracked it and riding along on my merry way got about 2miles and the bearing bust completly and the shaft was buggered at say the least. so i was wondering if anyone knows how many links there ment to be for the drive chain to be ok with. only if i added another link it would seem to slack, anyone else had this kind of trouble..??? thanks.