I recently purchased a replacement firing pin from Volquartsen for my Ruger Mark IV. It seams to be working fine but the bolt pin that holds it in the bolt keeps falling out. The firing pin is not putting any tension on the bolt pin so whenever I take the bolt out of the gun the bolt pin falls out. Is it suppose to do that or should the firing pin put tension on the bolt pin to keep it in? If anyone else has replaced the firing pin with one from Volquartsen and had the same thing happen to them please let me know, or could the firing pin be defective?