they can be tight and tricky also I had troubles getting mine adjusted right so I could get enough thread for them not to vibrate off but yet have them out enought that they would push out enough not dragging the cam bolt and it digging or scrapping against the clutch assembly, I got them adjusted good but Be very carfully not to tighten the set screw to tight , loctite it and snug it I made the mistake and tightened it a smig to tight and pulled 2 of about the 3 1/2 thread that hold it on, if this happens or I would recommend to order a set of 2010 and newer TRA cams they are 3threads longer and the clickers hold on more securely, I got this tip from DynomaJoe the it a clutching genious.
Good Luck, Wildcard