The C-washer takes very little end load and no rotational wear takes place. If the end float is still 3 to 4 thou too much, take a centre punch with a sharp tip and make a series of 'hits' around the inner side. This throws up small 'lumps' which will take up the extra end float. If it is slightly too tight when re-fitting, linish the lumps down until it is just right.
Yes, I know it is 'witchcraft', but it works. Only as a last resort of course.
The other tweek is to lay a line of mig-weld around the inner face and linish/surface-grind that back until the float is correct.
I know this is not good engineering practice, but 'in extremis' it can get you out of trouble.