Re: 84 stringer lower bearing carrier removal revisited.
I have had good service from the GLM standard carrier puller.
I have had a few 800 series apart (all freshwater) and never had to heat them. Slow, steady even pressure from a puller designed for the task.
O ring and corrosion the only thing holding it once the 4 bolts are out.
Bernz-O-Matic Brazing Kit
Product #58-0031-0 from Canadian Tire is a better rig than the standard plumbers propane torch
I have oxy-acet in the shop, but grab that thing more often...handy
I also speedy-sleeved an 800 prop shaft with 2 stainless sleeves and that worked well....couldn't find a sleeve wide enough for the double lip, but 2 sleeves worked... had to make a tool to push them on as I recall- supplied tooling wasn't designed for the depth of a propeller shaft.. in fact I still have that sleeved lower if you blow yours up trying to get it apart

good luck... lots of oil and patience