the valve on the tank thats hooked up to my grill is very stiff. Is there a way to fix that? Would squirting some WD40 down the shaft be ok to do? the tank is kinda full. should i wait until its empty to try to fix it?
Wait until it's empty and bring it to on of those tank exchange places. They take almost anything, even the old style tanks as they replace everything anyway. Just for liability purposes. That's why they're so expensive.