I had one do something similar to me when one of their tools broke on me. I waited until they came to a local trade show and brought the tool....amazing how quickly they are willing to work with you when their are other potential customers available to overhear it.
They had to mail a new one, but all of a sudden I was no longer required to mail mine at my expense first. In fact the salesman at the show told me to take it apart fix it and keep it as a spare (I sent it back).
I'll plug one that has been over the top excellent;
Blue Spruce was one of the best. I had a tool break, he replaced it without a run-around.