[Rick Parker]

It sounds like you only need to move the hole outward by .125 (1/8") for each stud? Contact axle company for their advice regarding strength of the flange after remachining. The axle flanges should be machined by someone with the proper machinery. The setup in a conventional vertical mill would be difficult at best and time consuming but the rotors are much easier and can be done on a mill. The proprietary machinery that the axle manufacturers use gang drill all the holes in the flange at the same time and eliminate the possibility of error. Any runout here would create a missalignment with the rotor and a potential vibration problem. This is a time consuming job because of the repeated setups. Leave it to the prosl........just my 2 cents

been there........Rick