New 20 ounce tumblers available now! Forum donation credit with purchase. https://www.wildguzzi.com/Products/products.htm#Tumbler
Did he reset the TPS after balancing?
I use and prefer the vacuum gauge set. I use the ones from JC Whitney and set the balance at 3000 rpm on the V11. Not exactly the same engine but similar characteristics. Very helpful to have some type of valve to dampen the needle movement. Metal, not plastic, aquarium air supply valves work well.