I have a Strikemaster 2 hp 49cc+ had it for over fifteen years and never had a problem at all with it other than changed the blades last year cut probably way over a thousand holes with it over the years and used to use it in northern quebec where the motor was touching the ice and was barely getting through 30"+ of ice. Would definatly buy another one if I ever had to.
I also find using synthetic 2 stroke oil is way better, smoother idle less smoke and its probably better for the motor as well.
Niagarafisher