<VV> Snap rings for lifters

[Sethracer at aol.com]

Has anybody replaced the bent wire retainers in a set of new lifters with  
real snap-rings -the kind that demand a set of snap ring pliers to  
install/remove? I have, at times found the bent wire pieces in the pan,  never a 
snap-ring. Is the groove in the lifter shaped correctly to receive a  snap ring 
edge, or is it "too" round, made to accept only the round shape  of the 
wire. Any thoughts on doing this? - Seth  Emerson