have had this compressor for several years, had a problem several years ago with the auto dump sticking open and damaging the 3rd stage pistion, i have had it in the back of the shop for several years now, i have just pulled it out and thought i should get it running as i do have a use for it now, want to know from some one with knowledge if i just need to replace the floating piston or what all needs to be replaced, i do have a rebuild kit for the auto drain system, there is 1000hr on the unit, anyone around with any exprience with this problem