Looks like the thread has gone on the hole now...tried another rejet last night and the bolt won't tighten down anymore
It was from me being an idiot and leaving the bolt as it was while out riding to test the jets. The bolt threads down into the hole ok, but keeps jumping out of the thread as it tightens...
Would the longer bolt and nyloc still work at this stage or would it have to be new carb time?
Cheers again everyone