I have a friend send me a mosaic pin that is an odd size. Caliper reads 0.394 +/- 0.001. What drill bit would you recommend for this pin? My findings seem to point me to an X-size bit which is 0.397, is this about the proper tolerance for pin fit up? Hate to spend $20 on a drill bit on something id never have a use for if it is wrong. Thanks.