I remember him putting up crazy points to start but also getting deked embarassingly 1 on 2 (not 2 on 1, one guy against him and his D partner) by mediocre third liners in his first seasons. The coaches said they had to really grind on him to change, prove to him that what they wanted was right. Shows it was a different time from "the NHL isn't at teaching league," as they did a lot of teaching first year or two, and very worthwhile. I had no idea about HF back then, but I don't remember it being a slam dunk that he'd be a complete D.
Watching him paired with a young Brisebois was always an adventure, they would score and be scored on.