i took apart and cleaned all the garbage out of the roller lifters in the used 5.9 magnum i just put in my 66 Barracuda. Unbelievable the amount of funk in them. But when i put them pack together i put all internal snap rings from Ace hardware that fit in the groove of the lifter to replace the wire snap ring. I also shot a few across the garage when taking them apart. But it worked great, cost 12 bucks and they are much more solidly retained together now.