Be sure to mix them thoroughly and in the proper proportions. Mix more epoxy than you will need. Small quantities are harder to measure correctly. Allow to stand shortly for bubbles to rise. Wet both the briolette hole and pin or cap.
Work bubbles out of epoxy in drill hole for best appearance.
Uncured epoxies can be cleaned up with acetone or mineral spirits. See the Epoxy Tips section for more information. 3M Company makes a full line of epoxies. Loctite Company also makes convenient and inexpensive epoxies under the Permatex brand name. It is available at Checker and other auto parts stores.