I'd also consider calling ProCycle and talk to Jeff about it... see what he thinks. He may have encountered this problem before.
Edit: I wonder if it's related to the cam chain tensioner? They sell a manual one that may work better than the stock automatic tensioner.
'12 Suzuki V-Strom DL650
'96 Suzuki DR650
'10 Kawasaki KLX351S #320
'01 Yamaha FZ1
Rob.G screwed with this post 02-22-2013 at 10:12 AM