Hmm - not sure about that work, normally you need to balance for the different weight in the vertical plane for the different weight of the pistons and rods by removing metal from the centre of the flywheel, adjusting the lateral imbalance with a bit off the sides or the cheeks. That lateral imbalance is not usually large. I plan to take a crank to a balancer myself tomorrow, and will be discussing just this!I picked the crankshaft up from Basset Down Balancing a couple of days aago. The Morgo 750 pistons and the Thunder Engineering con-rods that I'm using are a different weight to the originals so re-balancing was necessary. Swiss cheese doesn't come into it!!
View attachment 782420
View attachment 782421