This is strange, I installed a new regulator not so long ago (Holley BP). For some reason, it leaks a little fuel @ the adjustment bolt on top. I pulled it apart, no problems w/ the diaphram, no excess fuel in the top of regulator when I uncork the cap... WTH?? it seeps around the threads of the adustment bolt while running. Anyone had this happen?? I am running about 7lbs of pressure.