CNCdude,
I really was not trying to take sides or to lead anyone one way or the other, I promise. Wilbur45 said that he now understood what Leo was trying to say in his book and I was merely trying to point out that Leo was (rightly or wrongly)led to believe that it was done as an enhanced airflow thing. That IS what Leo put in his book (again rightly or wrongly).I have no dog in the hunt and have no reason to doubt your claim, I was merely correcting what Leo's claim was. If this was not evident in my post, then please accept my apologies.
fasteddie