R1200RS Cam chain tensioner tool.

[Grumpy Goat]

Thanks for the feedback - love it when people close the loop on a topic or thread.

You're probably right on the plugs and filter if they were essentially in good condition. That said, it sounds like the changes are quite subtle, and on an engine of this size and considering its [somewhat "agricultural"] character, small changes in timing from optimum are probably difficult to discern. Main thing is, you know that the timing is spot on and that peace of mind, as it were, is all that matters.