I wonder if the users realize the puny SN oil is at fault for old existing good designs becoming TOTALLY UNRELIABLE.

And you all realize that these are direct cam and bucket designs, or short rocker lever designs, right?    Most common design there is right now, all over motorcycles and cars and THAT SUX -- make the damm O2 sensors more rigorous and let us have oil that protects our engines !!!!!

Suzuki is talking about redesigning all heads on all current models to use a form of roller tappet instead of directly actuating the buckets.