I went to put a little grease in the fitting on my new trailer before a long trip that I was going to take. I snapped the grease gun fitting on the bearing buddy fitting, but could not get it back off after I had pumped a little grease in it. Finally I gave a yank and the whole fitting came off of the inner wheel. OMG!!! I got it off with a vise grips and faired it back smooth as best I could and snapped it back in, but now I think that damage has been done and I need to replace the whole bearing buddy. What went wrong here? I certainly don't want to put grease in again - could it be my new grease gun was defective???