|
Some of the air tabs don' look exactly straight in the picture, but I don't think that is enough to make much of an improvement. Also of note moving the position of the air tabs fore or aft will have an effect on their performance.
Do you have the air tabs spaced as recommended by the mfg?
Potentially a better test would to be marking a starting point on a hill someplace with some chalk and doing a distance coast test from the same point each time.
__________________
|