Hyde soft mount
Hum i dunno about the shaking... but I see that you have the mounting bracket for a Slimline muffler...
I just installed a slimline muffler on my 140L, and after 6 flights the stud became loose and the rubber O-ring blew-up. How do you keep your muffler attached to the engine? Do you use Loctite, or something else???
Thanks,