When I acquired the bike, not only were the flexiblocks improperly installed (one was in way too deep), but both of the mounting bosses on the frame were bent. The lower engine mount was also badly bent, and partially broken.
In fact, the bike is mostly still in this state. It's been too hot here for me to do any work outdoors. I did some rigging with the top spacers, bent back the lower mount, and got the motor into a workable position.. however, the airbox still lightly interferes with the chain.
When I get a good workday, I plan to correct these issues once and for all.
As for the bushings / mounts getting into this state, I have no idea. Could be crash damage.. or bad work by someone without the proper tool, and no understanding of the design.