I need to remove my fiberglass shower pan to replace rotted stringers but it seems to be glued ( 5200 maybe ) to something underneath. I can,t get it to budge so I,m thinking that I,ll have to saw it in two and pry it up in halves. Anyone have a tip on the least distructive way to remove it as I may be able to rejoin it after the repairs.. Any idea where I can still buy one just in case?