My 026 pro is getting harder and harder to start. It now takes 15 to 20 pulls before it "kicks" when cold. After it starts, it runs and cuts well. won't idle very well, then stalls. Even for a "hot start" I need to choke it to get it to start. I bought this saw used, and it is in mint ondition, and my dealer (that I truly trust) said he knows the saw and doesn't even think the saw was broken in at the time I bought it. What to look for??? Maybe the suction hose??? Thanks in advance.