Hi folk I have an issue with my clutch/engine after settting up my clutch and running 3 laps the bolt which locks the engine clutch in place un-winds and clutch no longer engages properly and plugs are destroyed.

I have rebuilt my clutch as per manual on many occasions and it still occurs. Can some one recommend some for me, another racer recommended I put loctite on the bolt then tighten. But I am not sure as to what effect that would have in the long run or is this a regular work around ??

This is the bolt right above the thrust bearing.