I am STRUGGLING to get this WISECO 420 piston into my recently bored and replated engine. I have done hundreds of top ends (2 and 4 stroke), but this thing is killing me. The problem is the wiper(?) ring >> the "accordian" ring including it's two flat rings. NOTE: this is NOT the two compression rings. I have installed the piston into the cylinder w/ the accordian ring by itself >> it fits. I have installed the two flat rings, MINUS THE ACCORDIAN RING >> they fit (end gap is zilch though) I put all three in the slot >> FORGET IT. I cannot get the flat rings to close up their end gap w/ the accordian ring installed. The accordian rings overlaps itself at it's end gap, making installation impossible. The accordian has a little lip on the inner side of it. The flat rings push against the lip FORCING the wiper tight into the piston. I thought of a ring compressor (NEVER had to use one) but I don't think it would work on this cylinder. I could use maybe 2 "C" clamps, offset by 180 degrees to hold everything tight, then remove one of them. The other would be aligned w/ the (2) dished out portions on the cylinder liner edge. As I insert the piston into the cylinder, and the wiper makes it into the beveled edge of the liner, holding everything tight, THEN remove the final "C" clamp...??? I am open to EVERYTHING and ANYTHING, including doing shots of Absolute Vodka to make me feel better (I have a case of Sam Adams as well).