I was going to ask this last summer, when I have the hood off my 67 9.8, it seems to be WAY more potent than when the hood is on. Higher top speed, quicker acceleration, idles better. The exaust gasket isn't leaking so it isn't smoking itself out with the hood on. Is there a way to get some more air into the cover without risking water intrusion on duck days? The insulation inside the cover is in excellent shape and I see no where, other than a few small entry holes in the shroud where the motor can get air. Thanks for any ideas.