| No I havent been tightening them, I had a good trawl round here and all the info says they are normal thread. Also can see a little bit of thread poking out the top of the nuts and it appears normal. However we did try the other way just to see if we could get any movement at all and there was none. I finally managed to get in touch with my fave mechanic and he said to order a pair of nuts as he will get them off but originals will be scrap. Only problem I can forsee is whenever he comes round to give me a hand him and his dog end up staying here for about 3 days! | 
Threaded Mode