Just for my information - I was running 15/39 gearing at Pau on the 350, which whilst being a little short was really not bad.
In the meantime I have rebuilt the 350 clutch, which was slipping at Pau, using genuine yamaha clutch friction plates. The wear limit was 2.7 mms, and mine were at 2.8mms (the new size is 3.0mms), but I changed them anyway. The original clutch pushrod adjustment was fine, but it will need to be done again. I am using Motul 10/30W Two stroke gearbox oil.
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