Sudden/multipule vibration for 20 seconds then stops

Is the prop fixed pitch or adjustable?

Fixed

Cool looking product Garret.

Did you do the flywheel and prop?

And I haven't checked the torque...

I will start there and let u know

Thx

I just put the balancer on the prop.

http://balancemasters.com/testvideo.html

450 inch lbs for friction torque.?

Carb overflow or vent is tucked in behind carb bowl retainer.

Any other thoughts on what to check?

Thanks