That makes good sense too. I would imagine BRP really only cares about these machine in the their first 3-5 years. Especially when they are under warranty. So maybe its possible that as these aged, they just ran out of the parts. Rather than make it unavailable & loose sales they went to the original design to keep the cash coming?
On a side note, Nearly all of the used ones I have looked at have had traces of med strength loctite in the bolt taps. So, it would appear that's what I will do. I can't find any reason not to use it except from the info in the manual.