I installed the Harley Oil Pressure Gauge Kit, part #75133-99 on my '09 Softail Custom. I took many pictures of the install to post here in case someone wanted to see how it's done. I drove the bike to the neighbors house after checking for leaks, ( about 100 Yards away ). After the bike is shut down for a few minutes the plug for the oil filling pops out and the clear oil that used to fill the gauge is covering the pipes and some of the motor. Not Happy!!! The local dealer has a replacement on order for me. I have a couple of questions: 1) What could I have possibly done wrong with the install? 2) With the oil filling gone, are there any dangers of me running the bike with the gauge unfilled and plug less?