vs clubsport hesitation on very light throttle

[clubby_you]

Hi guys had my clubsport for about 2 months now noticed my fuel econemy is getting worse and i now have a hesitation on very light throttle .
Car performs fine under full throtlle and normlal driving but when im driving miss daisy just as i touch the accel pedal it sort of dies not completely but just no power then clears itself .. any ideas thottle position sensor maybe..?
It has just had a major service8000k's ago and i changed the oil about 3000k's ago

[vs_grunta]

my vs started out doing the same thing, very small hesitation just off idle and then 1 at about 2 grand when cruising, but under full grunt , no problems. now misses real bad (undrivable ) foward bet reverse is ok , if you fix yours ill be inrerested in the answer.

[clubby_you]

I carried out a injector service at work and made a bit of difference for the better but i think i need to pull my injectors out and clean them properly .
And well i dont notice it anymore as i converted it to manual.