Long story: I put one nut on at an angle and srewed it. That was ok, it was only one stud. However, with getting punture repairs, springs fitted, COs fitted wheels changed etc. the dodgy nut was getting around, messing up more of the studs which in turn messed up more of the nuts. On and on it goes until I have arrived at where I am now. I'm going to take a nut off of another wheel that has all 5 holding and stick it on the rear and that means I have three. I have been running with three for a while on one rear wheel with not issues, so it should be ok. I'll talk to Duncan when I am in and see what he says.