pst 600r wont excelerate when first started
 

hi kraviuth, ijust received my pst 600r back from the factory after some repairs and when i first start the engine it wont accelerate for about ten seconds after i have opened the throttle wide open and it also takes about that much time for it to return to idle.
after the inital start it will accelerate and return to idle in a normal fashion.
please help
benny