Just a thought,....
To prevent the Cam Belt overheating...I am considering the 2mm washer idea to put a gap between the Cam Belt housing box and the engine as already sugested
on this topic. For the air entrance I thought drilling a lot of thiny (like 3 mm) holes in the rough part of the S&S emblem on the cover, to make it funktion like a intake grid

any ideas or cons to that mod? ...am I right that the 2014 M3W's are delivered with that gap for cooling the Cam Belt?