93 k2500 suburban fuel tank donsn't want to come loose

I am replacing the fuel pump, and I can't seem to get the tank loose. I've removed the guard plate, the bolt straps, and the fill tube, and I tried to pry it but it doesn't move. I cant afford to damage the tank. Any suggestions on where I should pry and with what ? thanx

the tank seems to wedge on these. i pry by the tow hitch and on the sides. you may need to pry both sides, it should drop. good luck.