I have a 1998 Regal Ventura 6.8 w/5.0 Volvo Penta & 2 bbl. Holley carb. The boat has sat idle for approx 1 year. The fuel tank was completely full during this time. The boat is in Orlando, FL and was not winterized in any way. When I tried to start the engine a couple of weeks ago (with a bad battery, since replaced), I noticed a fuel leak at the accelerator pump gasket, so I pulled the carb off and rebuilt it with a genuine Holley kit. The fuel in the carb was very stale and starting to get gummy. I reinstalled the carb, connected the new battery, turned the key, and it ran... for about 90 seconds. I had to prime it again (with the throttle) to get it to start, this time it ran about 45 seconds. Started it again, ran for less time. Notice the pattern. As the engine starts to die, increasing the throttle has no effect. I have removed the bowl after one of these stalls and the bowl is completely empty. The seat and float valve are new from the kit. The float is adjusted properly, and in my hand it is working properly. I have had the pickup uot of the tank, the tube is clear and there is no junk on the screen. The anti siphon valve in the 90 at the tank will operate with lung pressure. The filter/water seperator is new. I have not done an extended run test on the electric pump, since the engine has to be turning before the pump will turn. the screen at the carb inlet is clean. I'm running out of ideas... I'll take any and all ideas and suggestions. Thanks in advance