I have mostly been installing Volt fixtures for the past couple of years and have been having problems with the path light bi-pins that they sell with them. I recently went to a job that had only 5 path lights we installed a month ago and all were out. I tapped the bulb and they all came on. They are pregreased...although not very well by manufacturer but what else could the problem be? I also tried Halxogen 10K hr bi pins from my local dealer and had the same problem with those also. Thinking about trying a bulb with a thicker pin like the G6.35.