As I was double-checking everything before skinning my left wing, I was taking another look at my completed right wing.
I am curious if there is any kind of measurement to verify that the flap (I guess the flap hinge) is correctly connected such that when fully retracted and the flap top skin hits the TE of the top wing skin/rear wing spar, that the flap is not deflected down x degrees? Kind of like the measurement taken to verify the angle of the aileron.
Paralysis by analysis is beginning to setup as I am getting a bit paranoid and questioning everything. First thing I noticed that got my attention on this was when the flap it lifted all the way such that the flap skin is up against the wing TE, then the washer on the flap actuator attachment bolt will just touch/hit the edge of the hole in the rear spar.
The simple answer: try what you have got, and see if your airplane flies hands-off with equal weights on either side. You can do this when you ballast for phase 1, or in phase 2 with a passenger. Typically you want to adjust the flap on the light wing up to get the aircraft in trim. If you run out of adjustment, make a new hinge.
If you can fly from either seat, the roll tendency hands-off should be the same on either side.
On my legacy Sonex SNX-C01 drawing it shows neutral flap dimension same as neutral aileron on the detail note. I suspect the Waiex is the same.
I would sweat it too much since it’s adjustable and pretty easy to fix as long as it’s not painted.
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Thank you Brian and Andrew for your replies. I did verify the alignment of the flap hinge (center of the hinge pin) on the TE of the wing skin, so it can’t be too far off.
I hadn’t looked at the C01 drawing in any depth yet so I’ll check that when I get back to the hangar. I was seeing the neutral aileron measurement on one of the wing plan sheets.
Kevin
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As you said, C01 - there it is called out as the measurement for the neutral position for both the aileron and the flap, which of course makes sense. I had only been looking at W02 which calls out that same measurement but only states it for the aileron.
So, after positioning the Peter Anson flap stop in place, the measurement is dead nuts on for me.
I can sleep again tonight 
