B4 front hex (too wide 😠) help

[RDG 40]

Found out today at silverstone the c4.2 wasnt legal at the front end, with associated hex wheels and staggers it just wouldnt fit in box, it will go in just not drop of its own weight.

My solution was to luckily have sone jc wheels and they worked, i wasnt only one having issues.

Anyone else had this what did you do??

I can buy jc wheels obviously but i want to use my associated tbh

Someone also suggested taking a mm off each hex, theres seems a mm to play with that wont make wheel catch, anyone done that? Seems best option but looking for ideas how to do it cant see the dremel getting it that level if im honest and it being a botch job

Any ideas or help appreciated

Russ