When I'm giving it a lot of gas under low rpms, I get a sound that sounds like chain slap from the left side of my bike. I'm pretty sure that its not the drive chain and am thinking its the cam chain. I've tightened my drive chain a bunch and the sound is still coming. all bolts are tight. Do I need a new cam chain, tensioner or cam guide? how can I tell which one? any info would be greatly appreciated, thanks in advance!