Originally Posted by
I_like_cereal
I believe that it is a 4mm adjustment. I know that I do not "HAVE" to do it, but I like things done right. Plus how would this affect the bearing on the rear wheel if I did not spread it.
No affect at all. 4mm (2mm per side), you are talking about 1/16 inch per side or so. I would not cold set, just squeeze it in (it will not take much).