I am sorry Joe On the cowl. The senses at are Field is Leave it off. I never had it on from the start. With getting used to a new four stroke I wanted to be sure with playing with it I was getting all I could get performance wise. My Friend give me a new 15-6 APC last week I may have to give it a try. I wish I sealed the monokoat in front of landing gear to fuse. I had a rough cross wind almost stack it up on the flight line fence last week. Upon landing sideways to avoid hitting it I pulled the landing gear off. I noticed it was a Little fuel soaked. Re glued it and covered the slot up to the motor mount.