@wobbly Hmmmm, well, I certainly hadn't thought of that, thank you. I have a couple of other sets of mirrors I can try. No harm in trying, right?

@1872 Thank you for your input. I had, earlier, checked the torque/tightness of just about every nut and bolt I could; frame to engine bolts/nuts; su...

@8053 Thank you for your reply and continuing interest, I appreciate it the feedback. So, the things I've checked so far after my original post; the...

@wobbly Thank you for your input, much appreciated. In the course of doing a few of the tasks mentioned earlier I did check the rear wheel "play",,,th...

@8053 Thank you, your feedback is helpful. I have a small lift I can put the bike on to try that procedure. One thing I hadn't mentioned in my first...

@4949 I hadn't thought of the step of checking compression; I'll give that a shot (at east that way I'll know what the baseline numbers are) Tha...