Doc get me the measurements between to holes. I think the rear to center is 39 or 41 mm. 2 to 3 mm can make the center shock wll the cross shaft and stop itself dead. Get someone to compress the suspension, and watch the lower side of the back of the rear shock and be sure it doesn't bottom out. what track did you go with after you blew the 126? you are actuall relocated back 1/8 inch to far, which is 1/4 inch of track. So maybe under compresion the track is too tight. I emailed you too, so get back to me. Maxdlx