Help with removing stuck pinion yoke

I think the hydraulic part of the press is 12 ton? So not super big but I would think that's still lots of pressure? I am wanting to save the pinion , the whole idea on this " little " project was to swap a 323 open for a 391 SG so we have more gear and two tire fire, then of the threads on the pinion are going to need some attention after all this but nothing I cant clean up, as for how much pressure, well like I said it's a 12 ton press and I was pulling pretty hard, not sure if I maxed or not, and as for heat as I said in previous post I already have used lots of Oxy/ Acly heat on the yoke while I was pulling, pressing, snaking, I mean this thing is STUCK!

That's 24,000 pounds that is, IF it's rated accurately. You'd think that would "free somethin up" or break somethin. lol