When dry clutches go, they go.

Take it apart and have a look at the steels. We've fixed ones at trackday by de-glazing the steels.

Also on the dry clutches, in the steel pack, there is one thinner steel than all the others. This can be replaced with a "normal" thick one to increase the preload. We do this on all our trackday engines.
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If I have to take the carbs off once more...