Hi guys ive just brought a 1991 dt125 ive started to strip it down and seen there wasn't a traditional power valve no cables or servo ive been looking into it and seen some came without a servo and just have a fixed valve but when i came to take it off its missing lots of parts and is just spinning around cant seem to find any diagrams or parts for the model without a servo so am kinda stuck with what to do keep trying to find the parts i need to fix it in place or convert it so its got a servo type but not sure what i would need to do any advise on this subject would be much appreciated thanks Luke.