Nc35 jetting, need advice!

[dengus]

Hi all!!
I have changed an half sistem to my nc35 (is a localy made, no brand), apart of that is all standard, since then i notice that at lower speed it has lost a lot of power and has lost the brilliant aceleration that used to had, after 5k it seem to revs up fine again.
This bike wasnt sold here in spain so i can get no help, i have been told it need to rejet but i want to have a clear idea before i start touching anything.
I have to say that the exhaust is much more loud than the original one plus it seem to be wide open.
Any ideas of where and what i should start looking at??
Thanks all in advance.

[CMSMJ1]

Howdo, can we get a look at your exhaust system please??

What is happening in the airbox? Is it all standard??

[Cammo]

It sounds like you need to adjust the pilot screws for your freer flowing system, not replace the main jets.

Try turning them IN (clockwise) one quarter turn.