CPP spindle problem

The bolt hole for the caliper doesn't line up right. Where the caliper fits in the spindle, the u shaped area seems to be too long and the caliper bolt hole won't line up with the hole in the spindle. Is it ok to grind some of the spindle material off till the caliper bolt hole lines up with the spindle bolt hole? Seems an easy fix I just hope the bottom hole lines up when I get the top to fit.
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before grinding at anything please call our tech line at 800-522-5004. We can help figure out any issue. Thanks