i have a old b that i bought a while back that has been sitting for years. i started a rebuild but the power piston is stuck inside the air horn. anyone know a good way to get it out. i am letting it soak a little with some carb cleaner i sprayed on it in hopes it will pull out. also this carb has a brass tube below the jet that's not shown in the 63 shop manual, can this be left in? looks like it would be better for it to come out before it goes into the carb bath. thanks, hr