Stephen, can you elaborate on "not very well"?
I see they've returned to a more conventional down-draught cooling system with two inlets either side of the spinner.
Am I correct in assuming the louvres on the top of the cowling are the only cooling air exit? Maybe this is why it's not so successful? Do you know if there are any cowl flaps/cooling flow control?
I'm just curious about the performance of this set up. I've never seen it before now and it kind of follows on from earlier cooling drag discussions we've had on VAF.