I have a 15 ft. Beachcomber fiberglass rv and i would like to change the flooring.
the only problem i am having is removal of the toilet, it is a PotPourri model 737.
I have taken out the 4 holddown bolts but it wont budge, could it be glued to the tank
or maybe the wax seal is holding it. Any help would be appreciated

This won't be much help, I suppose since I have a Scamp with a Sealand Toilet but mine came off by removing the 4 bolts. On mine at least, there was gasket between the toilet and the holding tank top that was slightly stuck to both parts but it came right off with some judicious wiggling.

I suppose a previous owner might have put silicone sealant in there. In that case you may have to try to slip a putty knife in between the parts to cut at least some of the sealant.

I found a new gasket for it at Camper World so I suppose the gasket is a common item. Before I put mine back together, I installed some blind nuts on the inside of the holding tank just to make it easier to assemble/disassemble.

I'd try to find a manual for it and see how it's supposed to go together. I found a manual for my 1983 Scamp Sealand toilet by Googling the net.

Good luck with it.