Bottom position of u1 and u2

[costlow7]

Need some advice. I have noticed that the positon of the bottom u1 and u2 on BR7, in some peoples build pictures is slightly different from the book. Which is 180mm from center line, have they got it wrong or am I missing something.
I have read that some people have packed out some of there suspension brackets on the front so I gather that a little bit of packing is ok.
I have also read somewhere on here that the book suspension alignment jigs are incorrect, just need some advice thanks in advance.