Appreciate the information. I did dig back into the engine mount last night, the engine base is attached to the top of the boiler at 3 points, 1 - screw, 2 - smaller nut/bolt. I loosened up the mounting points to move the base, it may have helped. What I noticed is the tolerances are all close between the drive wheel, fly wheel and drive gears, probably not much can be done, it is basic to the design of the tractor. I'll get it all setup for another bench run, attach an accessory and get some video and posted. Thanks for the tip on alternate fuels.