Hi tom " there a rebust motor,, the only thing I can see, is the crank seals my be hardend ,due to standing, this will surface when shes running, as when she warms up, the idle usually creeps up , as air seeps by the seal.[ L/H ] generator side, the r/h will suck gear oil if its gone, [ white strong smelling smoke] . but you may be lucky, strip that carb, and clean the jets ,, that's a must