Fuel Tank Crud? Redoing Fuel Lines, Etc. Options

[kenshapiro2002]

So, in my continuing fuel starvation saga (another thread), I'm almost ready to rebuild the webers. Rode her hard again yesterday, and she ran pretty nicely for awhile and eventually started to starve very hard at really hard throttle. Took a very good look in the tank, and the walls look pristine, but in the circular baffle area where the sock is, there were many very tiny pieces of black crud, and the sock, though very hard to see well, looked pretty dark too.

Opinions?

Also, I'm thinking that since my fuel filter was pretty clean, that the sock might be my real problem...should take care of that before making the carbs clean and possibly getting more crap in them.

If I do pull the tank and replace the sock, shouldn't I replace the fuel line back to the engine? Any threads on that? Can I just hook a new line up to the old and pull it through?

Thanks in advance,
Ken

[kenshapiro2002]

Alright...went out to do the "test". I idled her for 3-4 minutes. As I apply throttle, she starts to break up, pop and backfire (seems to be carbs and exhaust) at around 3,000 RPM, and seem to want to freeze at 3,000 or so, and even start to lose RPM. If I just keep punching her further, she seems to get beyond that behavior and rev right on up close to redline where I can hold her for a good bit of time. This is the same as when I drive her...she starts to "eff up" around 3,000-3,500 RPM, and if I just force her , she goes beyond that up to redline.