I'm converting a 120-150,000 BTU natural-gas salamander heater to propane. I've machined a new jet block and have everything now except a length of hose. I need 5-8 feet of propane hose to go from the propane regulator to the heater, but can't find anything locally that's cheap. Any of you guys have a few feet of 3/8 ID surplus Buna-N hose I could scrounge? Perhaps from an obsolete appliance? Theoretically it should be 350 psi bursting pressure, in case the regulator fails. At least that's what McMaster sells for this purpose. Thanks for any help you can provide.