I've had this blower for going on 6 years. Always ran like a top. A couple months ago it started running poorly, hard to start. I thought my bad for leaving fuel in it over the winter so new plug, fuel filter, air filter and muffler gaskets. Exhaust screen was clean. Picked up a can of pre-mix fuel. Still didn't run like new and still hard to start, so put on a new carb. Now it won't start at all. I get spark, compression is good, but doesn't seem to be a wet plug when I pull it after 15-20 pulls. I'm sure I have the fuel lines right - it won't purge one way and the other will. I don't get any kind of notion its trying to start (yes, the switch is on) and I've fiddled with different settings of choke and throttle. Anything else to try, I'm frazzled?