Don't think you can restrict it Superted, but you can change it for the 10 or 20, I forget which one is the best out of the two, a quick search in here should tell you as I posted up the other week, which was the one to swap with.
3rm-20 is best according to most but it just getting one for the right money. just wounderd coz my m8 has just had his rs 125 cdi done so fort u might be able to do sumet with our stuff
on a 2002 there r loads of restrictions , first remove reed valve switch from behind clocks and put a full dep pipe on and there will be a big improvment as for the cdi only thing as so fare is to change
There appears to be confusion between the reed valves and the read switch. The two are not connected. The reed valves Control induction. The read switch is electrical an I believe reads the rpm and then retards the revs.