Hey guys, Let me start off by saying that I haven't been dealing with trailers a real long time so if I'm missing something stupid just tell me. I'm having an issue with my trailer wheel leaking grease. I removed the cap to apply fresh grease through the grease fitting. Pumped it full, then put the cap back on but ever since it's been slowly but consistently slinging grease out of the cap. At first I chalked it up to excess grease, but this has been going on for months. What gives? Any ideas?