Thanks again Simon
You would not believe it but I had to take the scratch plate off again because the knobs were to high above the plate. I upgraded to Bourne minis and didn't realize they had long shafts till all was assembled. The Bournes from Pitbull do not come with the extra nut to adjust the height although the Bourn spec says they are provided. I gave up trying to get some nuts so tried 10mmm washers from Bunnings with worked fine. 2 per pot.
Anyway I was not happy thinking about taking the strings off again but as I turned out I did not break any this time. I have no idea if I did anything different. Now waiting for a couple of roller trees to let me finish the guitar. The freight is sur a mess. I have waited about a month for various last minute bits to arrive.
I am not sure I like the lockers. They sure are vicious on the strings. I can see the point in using them for tremolos and a lot of bending as for which they are advertised. They will stop the string loosening on the machine. But I am shying away from putting them on an ES I am currently planning.