We have solved all of dist. gear problems by not using the
oil coolers on the cars we build. It seems that most of the
oil coolers used in the kit and replicar industry are to small ,and cause more trouble for the gear. This is even worse in cold weather conditions. I also agree 100% that the gear needs to have a press fit along with the tension pin. Mallory does not use enough press on the gear and they do have many failures. Some Ford crate motors have the same problem. We tried 5 of the Mallory units and 4 of them failed! We have fixed many Ford crate engine dist. gear failures also. The MSD seems to be the best at this time for us.We have no trouble with high volume
oil pumps in our small block Ford engines. Remember to use the right gear for your application. Hope this helps.