Just going through the process of replacing the bearings in the rear swing arm on a 2002 BP. It's coming apart surprisingly easy, nothing seized. It's a standard chain and sprocket setup 14/38. There's still life left in them both but considering replacing them whilst I'm here. Any suggestions. I'm old and drive like Ms Daisy but I'm OK with that. Is there any voodoo to retighning the chain. Prior to removal, the BAH bearing was sitting at about the 4 o'clock position when viewed from the sprocket side. The bike was running fine beforehand. Just an advisory on the MOT for slight play.