From the look of things, you are in a little bit of trouble.
If you have not been on WW for long, there was the enigmatic Sam Ingram / Bocephus. He knew a lot about axles ... and other mechanical stuff. He also had very firm political views. One thread, after a clash, he deleted his user account. He is missed greatly at least for his his mechanical knowledge (and willingness to help out).
Here's a sample. (I have two boat trailers. One with grease, one with oil bath. I prefer the oil bath ... now that I have educated myself how to maintain them.)
The debate over which is better rages. Semi-trailers all have oil bath bearings, but none have to launch in cold water while hot, perhaps compromising the seals. On lightweight trailer loads, grease bearings can survive the most suffering neglect.
When you have an oil bath bearing, the hexscrew tightens to 15 inch pounds. That is light tightness. Don't overdo it when retightening the plug screw.
(I carefully drained all the oil, took solvent, cleaned the hub threads and hex plug screw, and re-applied Lock-tite. I have not dis-assembled again so I don't know if wise or not but ... all is well after 2 seasons.)
http://www.wakeworld.com/forum/showthread.php?t=782730