My Homelite EasyReach with Zipstart 25 cc family 4HCPS.0254AH has always been hard to start. Last year it would run for 5 minutes when warm, then die.It would not always start easily again. This year, after new gas and plug and lots of pulling is will start and die immediately. When it tries to go, moving to position B or C - opening the choke, kill it immediately