You must be planning to do some painting soon, and fired-up your 'paint-shaker!':rofl_200:
First time I rode my friend's back when they were current production, when we stopped, I suggested he had either a broken motor mount or was missing a couple of motor mount bolts.
"Nah," he said, "that's how it is!"
It gave me a new appreciation for my Mach III.
I have a Kawi 440 parallel-twin I rescued, and it shakes far-less, but it has a balance shaft.