i recently got a non-running '79 puch magnum mkII. it seems to bog down when i give it gas, and when i finally do get 'er revving as high as she'll go, there's almost no power...if i try to go up an easy incline she'll slow down and eventually just not go any further.
i've de-rusted the gas tank, cleaned the fuel line and carb, made sure the airbox is breathing, it's got a newish biturbo exhaust, and cleaned out the cylinder.
anyone got any ideas? thanks alot.