My last circle track eng iirc the rod stopped 7&1/4" down from flush with the NPT oil sender port at the rear top of the block after I drove it in down visually halfway between the 2 horizontle ports. with no plug yes with alot of debris that could easily cause an immediate problem or if there is no significant debris the eng will wear out years before its time with the owner having no clue what is actually happening, all the while doing religious oil/filter changes & thinking he is golden! I will call the guy again soon. EDIT I could see where a non Mopar shop could easily miss that detail.