I got the red '71 fired up tonite, only took a few kicks. It idled really high and the throttle doesn't work well even with the cleaning and new cable. The yellow '71 still eludes me, same treatment but only a hint of fire so far. The '72 just looks on and hopes for it's turn. The '81 is sitting wheel less and waiting for a 150 Lifan or some such.The '82 seems to lack the top-end rush that other people cite, 40-45 is reaming it.