The pin size holding the front sight is smaller than 1/16 inch. I think it is .055. I am having trouble finding that size drill bit to drill the hole in the new steel fiber optic sight. I thought maybe I could just drill out the S&W factory sight hole with 1/16 inch bit, but found the stainless steel is very hard to drill. Then I thought I could epoxy the front sight in place? What would you recommend? Thank you