Hey Hill202 that's a picture of my airplane you posted to start this page. The crank is off center by 1/8" not a 1/4" and I can live with that, you can't even tell once the spinner and prop are on. I could have gotten it almost perfect but the cylinder head would have touched the side of the cowl (the way I have it there's clearance). So if someone wants to spend the $650.00 for the twin OS go for it, but I'm very happy with my Saito 150 setup which is more than enough power and flies the airplane like a dream!