I have access to most of the frame threading & chasing tools needed at the shop I work at, I would love to have these tools myself but unless the deal of all deals happens I don't think it will happen.
I have found that a 1/2" or 5/8" nut & bolt works 95% of the time for me getting stuck BB cups out. I am working on a very frozen cartridge BB on a Trek 800 Antelope right now & so far nothing has been able to get the NDS moving, heat and my Snap On IM650 impact gun haven't been able to move it yet. I have let it soak for a few days in CRC which I sprayed down the seat tube after I heated it up.