My EB431 has not been running right lately. I believe the problem is that its not getting enought fuel. When you try to give it throttle, it bogs and dies, unless the choke is partially on. I've noticed that when it dies the primer bulb is not full, but havent been able to find any fuel leaks. Does anyone have any idea on how to fix this problem? If I pump the primer bulb like crazy to fill it up, or just push it and hold it the machine will take throttle, but will eventually die the same way. Any Help would be greatly appreciated. Thanks.