340 connecting rod oil squirters

I had cross fire in the cap once... scuffed the skirt of no. 5 piston and hollow knock at low speed....kinda quieter after hot but definitely there

Mopar had some poorly phased distributors in the 90's that hurt a lot of motors.... they quietly fixed the issue and that was that.... but it cost me 2 pistons...same motor, changed no.5 twice before catching what was up.