If I understand this correct you would suggest to file away the area I (roughly) marked in red here ? The stub axle has approx 12mm material at this point.... I would need to take away ~2 mill..
I'm pretty sure you could remove 2mm from there without any structural impact. Would need to be the full width - more of a 'notch', although be very difficult to do neatly in situ.
"Y mae dafad ddu ym mhob praidd" 1972 4/4, 1981 MGBGT, 1984 FLHT1340, 1980 XLH1000, 1990 ZX10