ive done everything same problem:

-Ive change the tuned pipe,
-Ive changed the fuel lines and pressure lines
-Ive replaced the gasket
-Ive set LSN
-Ive change the fuel tank

Ive done every single thing, i must say at this rate there is something wrong with this engine. Ill wait your post dino before i decided to return it. Ive never seen an engine revving so high with a near enough closed carb!