Power torque Warning
When putting new rings in a power torque its a good idea to just put the lower ring on the piston and get it in the cylinder then slip the top ring on and get it in the cylinder.
With both rings on the piston, while holding the lower ring with your fingers and tapping the piston itno the bore the upper ring being out of its groove and really really sharp can take bleeding big chunks out of the fingers you are using to hold the lower ring into the piston with.
I not so much of an issue with a full crank as it has more of a shallow taper on the bore to lead the rings into the bore.