Hello everybody. I recently took my motorized bike, a 66cc grubee sky hawk, out for the first time since last summer, and I decided to move the kit onto a brand new bike. The 'v' in the frame of this bike was slightly smaller than my previous bike, so I was unable to fit the engine and carburetor without offsetting the carb. I made a makeshift intake offset using some hose clamps and rubber fittings from home depot, but this may have created an air leak. The bike didn't have much power, would bog past half throttle, and it would continue to rev for a second or so after letting off the throttle. After several attempts and fixing the potential leak the bike began to run more and more rough when under load, and when revved the engine sounded particularly 'tingy', like something was rattling. I then purchased prefabricated offset off of Spookytoothcycles, hoping this would fix any air leaks. Now the bike doesn't want to rev on its own quite as much after letting off of the throttle, but the roughness, lack of power, and rattling when revving issues are still apparent. Is it possible that my makeshift offset created an air leak, caused extremely lean conditions, and fried my piston/rings? Does it sound like I might still have an air leak with the new offset intake? One thing to note; I rode the bike for about 2 miles today with the Spooky Tooth intake with the engine still just as rough as I described above, but I was actually able to reach some decent speeds on slight declines. The bike was very weak and rough, kind of bucking, when under a heavy load going uphill, but I hit 31 mph on a gradual decline with the stock gearing on 26 inch wheels. The engine sounded terrible and I could hear the piston slapping on every cycle, but I don't know if this rules out the possibility of the piston/rings being completely cooked.