Re: Piston Arm?
can you contact your seller and ask him if the flywheels are one piece or is there weights bolted on the flywheel? They may not know and I've not taken one apart with the built up flywheel so I don't know if you can tell by pulling off the head and cylinder. but that shaking makes me wonder?!
You might ask Mr. Dax he might have some insite on this.