1) Completely removed the air dams in front of the #1 and #2 cylinders.
2) Sealed every hole I could find around all of the baffles, including the inter-cylinder baffles. Used RTV red.
3) Adjusted the gap seal between the baffles and the cowl top so that there was very little leakage there. I used RTV red in strategic places on the baffles and a few places on the cowl.
4) Finally added an Anti-Splat-Aero cowl flap to the passengers side of the lower cowl unit positioned on the vertical surface.
See this thread:
http://www.vansairforce.com/communit...ight=cowl+flap
Now I can climb through 8000 ft on a hot day at 1200 ft/min and stay below 385 deg. F.