Hey guys I got to tell you that i just used the 2 1/2 inch stand off and my cowl fits perfectly. Any reason why you guys are using the 1 1/4 and 1 5/8 stand offs. When I orginally spoke to CHip he said the cowl can be moved two inches iether direction to obtain a proper fit with Spinner. IMHO I will see how the 2 1/2 inch stand offs do then I will report. I was flying My DV before with a Moki but now I decided to go gas. I am hoping for better 3d performance with the 50