Everything written by the experts says DO NOT clean the jet with a small piece of wire. Jet sizing is critical and a wire will abrade the jet orifice.thanks for the wire bit, I only have an aster and roundhouse , which apparently are more forgiving.
Remove it from the holder, and use a blast from a gas can or just blow through it the wrong way.
P.S. If you are getting 50 psi, then your problems have nothing to do with the gas jet.