I have a 68/4500 WGP Stratos tank (pretty sure that is what its called). It has the high and low pressure springs. The reg is busted, when it is being filled it just leaks right back out the fill nipple. I'm a little tight on cash and it has just been sitting around for a year so I wanted to know how much I could possibly get for it. Anyone have any clue or would more information be needed?