If I were a gambling man, I’d probably bet that the h&h’s are fewer and farther in between, and possibly reserved for the cartridges that actually need them to be used.
I’d think it would be similar to having a 300wm donor converted to a 338wm which I did years ago, if I remember correctly a spacer or something had to be used, to allow the shorter cartridge to feed properly. That was in a classic receiver though, not a pre 64.
It will be interesting to hear the continuation of these communications.
