Just tried starting my zenoah g26 magneto engine,the motor has been sitting for a few years,anyway the motor first started and ran fine for a couple minutes,then would only idle,would stall when throtleing up,pulled the carb n isolated gaskets off n noticed gas between gaskets,so I cut new gaskets and installed them,took a bit to get the motor to pull gas but it finally started ran fine,then did the same thing,pulled everything apart,same problem,my question is do you k ow where I can get a aluminum isolated block for this engine?I found one guy but there only for car applications,and do you think this is the only problem.