Well, there are no engine mounts in classic meaning, just couple overhangs with silent blocks on a engine housing and coresponding overhangs on a frame, with axle protruded through.

Although, speaking of front fork, you mentioned wobbling. Maybe those silent blocks (their rubber) are worned so you got this wobbling. While you are there, check silent blocks (or bearings) on this "engine mounts".

About vibrations. Are you sure that they are originating from the engine, not from the tuppeware?