Hello Major,

I have done as you and had good results.

I now go one step further and ad small pieces of balsa to the opening that lead to the cylinder and head. Nothing fancy. I give them a quick coat of ca for fuel proofing. I try to get all the air thru the fins where it does the most good. I have been rewarded with engines that even with an accidental lean run don't quit.

When I was a kid we would crack the window over our beds and on the opposite side of the house put a fan in the window drawing the air out . You would get a low volume, high velocity rush of air to cool you off. Same idea as a whole house fan before the need for A/C.