Good news.I have an ASP 91 that had a little accident and now the base of carb is broke so im thinking about making an adapter and putting a walbro on it and run it with gas.I too am curious about the crank pin.I dont know why the crankpin wouldnt hold up with gas instead of glow unless its the heat factor.I could just try it.A new carb is 40 dollars at least and its only worth about that in running shape on ebay.I already have a carb and my lathe.