I have an old echo trimmer that I just registered on the echo website and it still has some warranty time left. It gradually got harder and harder to start and eventually went to around 50 pulls and 2 minutes of warming up to get it working properly. I flushed out the carb and changed the spark plugged to see if that would help and now it wont start at all. I used some starter fluid and it runs for about 4 seconds then shuts off again. Question: Do the warrantys cover stuff like this (not starting)??? Or do they only cover busted bearings and such???