So much for the Modman....

I would take everything with a grain of salt until the OP posts valid results with a dual plane and
the original 800 cfm carb with no other changes.

I know, I know....you checked everything else and I believe you but humor me on this one point.

Anxiously waiting the conclusion of this story. Thanks for posting.

OMM - The Modman was run in both single a dual carb configurations - the only comparison I can provide is a dual carb vs dual carb...as the Eddy has no provision for single carb useage

But considering the Modman single carb only MPH'd at 110... and the Modman duals mph'd at 114.... Theres not a lot of point worrying about the single configuration.