Please help!!! My WR400 will run just fine for a few minutes after warmup then will just die instantly. The problem started slowly, then got progressively more frequent. It will die at idle or while riding at speed. Before it dies it seems to be running normally. I have recently soaked, cleaned and blown out the carb internals without making any adjustments. The jets are clear and I have noticed that in addition to dieing on it's own, it also will die when easy throttle is applied. I have not changed the plug recently but feel that can't be the problem because it runs to good before it quits. In my mind, it sounds like electrical or carburation but I don't know where to start. Does anyone have any ideas for me. Thanks for your time and input.