I recently replaced the drive chain with a new O-ring chain. I also replaced the chain guide and Chain slider. I have the chain adjusters ran all the way in and the chain is still too tight. I am running stock gearing 15/50. The new chain is the exact lenght of the one I am replacing, which was also an O-ring chain. I am not sure what to do to fix the problem, I thought about dropping the rear sprocket down to a 49T or cutting the chain guide pad down some. Any suggestions?