Hope someone can answer this. I go to store for the rental and the fellow takes me over to the brake stuff aisle and hands me a box shaped universal adapter with different tab configurations on each face, as is square opening on the faces for a 3/8 ratchet. to turn the piston, the fellow says. Ok. but looking at the nifty harbor tool I considered the process. How can i compress the caliper piston properly and how many turns are needed?. Probably over thinking it but it gave me pause and I did not do them today. Any thoughts out there on this I hope?