Leaf Blowers

Purchased Husqvarna 125B blower 3/28/2012. It ran OK for about 12 months, then became difficult then impossible to start when hot after using and attempting to restart. Have replaced air filter, sparkplug and fuel lines. Removed, disassembled, and cleaned Zama carb. Cleaned/blew out fuel filter and muffler. Until recently unit starts when cold and runs OK, However it is now becoming difficult to start when cold, but does continues to run OK after it starts. Have used Husqvarna 2-cycle oil, Sta-Bil at the specified ratio and marine fuel for the past two months.

Your comments and recommendations will be appreciated.