Re: engine issues!
Depending on how far you get with WOT, it could be your tank vent, or the petcock's sucky flow. When you take'r out next, and it starts to do die, loosen off your tank cap. If it all of a sudden runs awesomely, you have a vent problem.
If the vent didn't solve it, your petcock might be the weak link. Either upgrade, or, grab a shut-off valve for $3 to put inline after the tank petcock. Take an 11/32'ish bit and just drill right through the whole stock petcock. (take it off the tank, obviously). Their just cast crap anyway.
Build with pride! Build to ride!
"A clean shop is a sure sign of a cluttered mind" ~ fasteddy