Cold Start Issues

there is no where for fuel to leak out in an AVS carb, its not a TQ. If there is no fuel in it, it boiled out after the last run. use a insulator under the carb, like phenolic or plastic. When I was young, I gave up and went to a electric pump, problem solved...or worked around. the choke pull off cannot pull the choke completely off. it only allows the choke plate to move slightly under engine load.There are physical throttle stops (actually steps) involved in a choke application that need to be lowered by heat from an electric coil or exhaust heat. Push gas once to set choke on cold motor: when you do this the cold spring is under tension to pull the choke plate closed. this is tied to a throttle stop ramp that rotates under the throttle stop and props up the throttle to a fast idle position. When the warmed coil spring relaxes the choke, it rotates the curved shaped throttle stop back that progressively closes the throttle until it no longer props the throttle open. Thats why your idle gets lower and lower when it warms up. For all this to happen semi automatically, there needs to be residual fuel in the bowl. My electric would pump for 4-5 seconds every morning when I turned it on, thats how long it took to fill the empty bowls. without the fuel in the bowl, I had to crank it for maybe 10 seconds before the fuel would fill the carb, too long on a morning. Try this: put some gas in a squirt bottle and fill the bowls next cold start morning before you try and start it. Just put a few healthy squirts in the breathers outboard of the step up spring covers. Then push gas one time and crank without foot on gas.