We have a Shindaiwa handheld blower we use for small blowdown jobs. Its 3 years old and has always run great up until lately. For the past couple of months we've run into trouble starting it, even after running it, cutting it off and trying to start it up immediately again. Almost seems like the On/off switch has gone bad and is breaking the circuit even when it is flipped back into the On position. Any of you guys run into a similar problem? When it does finally start it runs great.