On Thursday, December 6, 2012 10:33:40 AM UTC-5, Grider Pirate wrote:
I carefully leveled Uniform Fox, then used a laser level to 'draw' a
line perfectly centered line on the fuselage from the nose to the TE
probe on the tail. I'm quite certain I netted a 10% performance gain
with the MkIV.

But, its hard to tell, on account of semi-blindess after staring
into the laser...