I have found Dan Undersander at UW has a lot of useful information and test results in several publications.

One of his comments was that leaving a wide thin swath was as important as conditioning in his dry down tests.

In the New Holland video I linked to above they had actually taken the sheet metal off the back of the discbine and put some vanes in.

I am thinking of taking the sheet metal off the back of my JD. Has anyone done this?

Jim