replaced the right side intake cam shaft and it corrected the problem, the tone wheel spun on the cam shaft

all of that has already been done, this is a repeat customer, has had new tensioners and check valves installed

attached a picture of the compared graphs

hello all, i have a mercedes W221 with a M278 that has an extended crank with a stored fault for the intake cam adjuster bank 1, the cam adjuster has been replaced, the only way to check base timing are looking through these dumb windows and looking at the pick up wheels for the cam shafts, its not ...