I have a bearing failure in the head section of my Homelite ST-175 string 2 cycle gas trimmer. The head now moves too much to advance the line and a bearing squeal is now herd. I am looking for a replacement bearing and while I'm at it a replacement priming bulb and friction feed nut. My local service representative is no longer carrying the Homelite brand and could not help me with spare parts, but would like to sell me a new trimmer. Thanks for any help in this matter. Greg