The were thinking ahead and made an opening in the firewall that allows cooling air to pass, trouble is if you leave the scoop as is on the bottom there's no place for the air to get out. I plan on cutting air outlets in the back of the scoop to help the cause. Also, many tend to cut the exhaust outlet holes as tight as they can. Making them larger is another path for the air to get out.. For inlet I'm sure it would help to cut out some in front of the cylinder, that way you're exposing more of the cooling fins. The DLE-55RA has larger cooling fins than the DLE-61, so it will be even harder to keep the 61 cool. That tightly trimmed cowl never looks good after a poor engine out landing due to overheating.