I am doing a new top end, and I was able to get the old ones out with a little screwdriver, but getting the new ones back in is not going so well. All I have managed so far is to bloody my finger. I tried needle nose pliers and the screwdriver, and not even close. I was able to put one in that way practicing on the old piston, but the new one is in the rzr, and access is not wide open. Anybody have a good technique for putting them in place?