Propane low pressure regulators are factory set at 3 PSI. if you can blow 100 times more PSI than that, id have to say you have been practicing.
Also someone mentioned that he/she only opens the valve 1/2 turn. Propane valves are double sealing valves and as such need to be all the way open or all the way closed or they can leak past the stem packing. How many super smart propane users knew that.