Hi Daniel69 and welcome to the site.
Can you tell us what jets you replaced and the sizes they are now.
How does it idle?
Have you tried adjusting the fuel screw and if you have how many turns out is it at the moment.
C30F Power Up needle
2 turns out
Baffle out, Screens In
It starts,it runs,it gets to where all CRFs can get to without the valve or valve plate dramas