I bought a Tee kit years back to split off the propane tank to my bbq grill. the fitting that screws onto the bbq grill has become difficult to screw onto the grill fitting, it spews gas as I'm screwing it on. A replacement hose is over $70! At big box stores, a male to female hose is under $20 but a female to female hose is over $70. Huh? Anyone have any experience replacing a bbq hose like this at a reasonable cost?