Okay all you brilliant folks, I bought a used torch in the garage sale that came with hoses and a fairly small acetylene regulator. One side of the regulator has a fitting that fits the welding hose just fine, but the female fitting that should connect to the propane is much smaller than the tank connection. Do I need some kind of adaptor, or is it just not possible to use this regulator? Appreciate any help you can give. Does anyone know if this adaptor will work?