I'm trying to minimize weight and the stock chain seams way too beefy. I know most experienced folks have switched to a #41 chain but I'm unclear what's the diference. Seems like it's quality not size. Is the #41 thinner along it's width? Has anyone tried to use bike chain? Can you get a smaller sprocket for the motor? How bout for the left side wheel drive? I know the impulse is to think you need a heavy chain for the tork but a single speed bike chain can take my 210lbs pushing as hard as I can from a dead stop and that is way more tork than my motor puts out.