flat / dead spot

[mynameisearl]

ive got a flat spot / dead spot in my VT (auto) when i accelerate it takes off ok but then nothing push further and then it revs harder picks up. Its a pain when over taking because it takes that bit extra to pick up when you pull out to go around someone. what do you guys think i can do to improve this?

[VRSen]

Try leads then plugs

[Commydoor]

8/71 supercharger