I have a Summit oil pressure gauge installed on my Camaro. Works fine and everything, but leaks from the hole in the brass connector where the plastic tube goes. I dont think I installeld it correctly. I remember there being these little tiny brass pieces that looked like the plastic tube was sposed to go through, but I couldnt get them to fit, so I just left them out. Are those why mine leaks? cuz I cant find them. Any idea where to get replacements?

No I didnt read the instructions first, not my style, but accidently threw out the manual and spare parts when cleaning out the garage last year l

 

You might want to get to a hardware store post-haste and get a ferrel (the little brass thing you lost) for that line before it blows out of the fitting.