aprilia sr125 slow sluggish set off

i have just fitted a polini variator and rollers and polini belt it seems very sluggis to set off any advice in why this

 

Polini belts take about 90miles running in before they perform normally,the new belt has to conform to the shape of the pulleys. Whenever we put a new belt on the sprinters we run it in first on a street bike.
If it dosn`t settle down I suggest you check your jetting/clutch or roller weights.

And please adjust your text size...it looks like you have the caps lock on which is seen as shouting and won`t do you any favours asking for advise.

 

can't fault both bits of advice there, text size adjusted. keep it to a standard size in future, forum looks tidier that way.