[Cal Metal]

Move your air correctors up to 200. The idle holder should, optimally, be around 65/70 with a 120 holder. Make sure the etubes are F 7s. The problem is with the air cleaners, I think, because a loss at top end would be due to a too lean (higher) air corrector. 140s are pretty rich. I think you are losing all your power because of the CFM demand when you approach the higher r's and the air cleaners are restricting air flow.