The theory is that if the connecting rod is offset from the center of the crank by a mere additional 2mm or 3mm, then there's an increase in torque and engine displacement and probably compression. It would also clear the transfer ports and exhaust ports, so an increase in flow of gases would also increase. But thicker gaskets might have to be used depending on the length of the barrel or if the piston overshoots the barrel, but I doubt it. I already have this kind of customized crank, but have not assembled the engine yet. The nice thing about this is that everything looks the same from the outside but the power and torque could be a big difference. So a 66cc HT can become 72cc. I don't think there would be any timing issues, since it's only 2mm, but rpm might be reduced. What do you all think about this set up?