Ok so the newer style tensioner is old news by now, so if ya haven't yet its time to get that done, both old and new are hydrolic but the new has holes in the mounting plate and the cap that bolts where the old plate did acts as a reservior. The deal with the "chaintooth jump guard", is pretty simple, remove clutch/crankend cover and it snaps into place over the existing guard casted into the case then held in place with the cover, adding additional protection to keep the chain from skipping a tooth should something cause it to. I should have done all of this myself, but the other day on the phone with the dealer this was new as of last month and the service bulletin was not all that clear as to what held the guard in place so I opted to pay and watch this time, education comes with a tuition price and this one was about two and a half hrs. shop time on the first go, but its only about an hour and a half job, this guy is a clean freak, after finishing he was back there with a can of cleaner in one hand and a fresh micro-fiber cloth in the other removeing any trace he'd been there. They did it on saturday, a good job while I waited so I paid cash and thanked them. The parts, gastet, tensioner kit, guard and one time screws etc. run about two bills plus labor, 400 dallars for the peace of mind that I've done all that can be to this point to prevent cam chain/related failures.