No Gas to the Carb When Engine Warms Up

You're chasing your tail. The fuel filter appearing to be almost empty of fuel is normal and does not indicate a problem (and really, you should be running a metal filter, preferably repositioned as per the Fuel line mod).

You'll get some good advice about the stalling problem if you'll tell us about the stalling problem—all you've told us is just one sentence ("I have a stalling problem") but then a lot of description about the visible fuel level in the fuel filter. Tell us more about the stalling problem: only when the engine's cold and you try to accelerate? Only when the engine's hot and idling? When, where does it happen? Can you work around it? How? That info will help us help you.