Im using a Ryobi engine on an origional design of mine, i have to wiggle my finger around to get it over the carb inlet to choke it, is there an easier way to choke the engine, I use an electric starter after i get the carb "wet". I put a piece of fuel line over the primer bulb nipple and sealed it with a piece of 1/8" dowel, can i use a primer bulb and will it prime the carb? Would appreciate any help. Thanks