In the Merlin settings you posted earlier, what battery are you using in the camera and how are you accounting for the LCD flip angle (which, I imagine, is not going to be a precise angle)?
Steven,
I was using the standard 950G battery.
The LCD position does have a significant effect on the balance of the Merlin, but it can easily be accounted for using the fore-and-aft and side-to-side trim rollers. These are used for fine tuning the rig and are not mentioned in the cookbook settings.