I don't know if you've ever used one before or not but do not remove too much metal from the top of the cylinder. Those Cutters can cut past what's your cylinder bore already is.
No i havent but I watched a YouTube video so im a pro now! Hahaha j/k
No seriously thanks for the heads up i will go slow and just take enough to get the pistons out. Sucks i had to buy it for 4 pistons. I will put it up maybe I will need it again someday. All the tools i have bought for this project im gonna start renting them out on here make some of my money back lol