My Pietenpol wing is rigged to have 3/8" washout at the aft end of the 3rd rib in from the end of each wing. Much like a J-3's washout or Aeronca Champ's washout are set at. My ailerons were rigged to each have about 3/16" to a 1/4" droop on the ground with stick neutral. The older IA's at my field who helped me said this practice was commonplace on Cubs to DC-3's and the idea is that during level cruise the airflow over the wings pushes the ailerons up to the neutral position taking out the bit of normal play in the aileron cable system. I believe my dihedral is about an inch at the wingtips. What I've found on my Piet is that an improperly rigged (twisted) horizontal stabilizer can make you think you have a wing (roll tendency) rigging issue. You can even have one elevator rigged a little higher or lower than the other and it makes like a wing issue so sorting these things out in your flight test period is helpful in whiling away the hours in your practice area.

My Uncle Tony Bingelis (there not really related but sometime I think Mike wishes he was.  Mike really recomends the Bingelis airplane construction books available from the EAA ) has some excellent passages about rigging and flight testing our airplanes to get them to fly as hands-off and cleanly (there's a word you don't hear too often associated with Pietenpols) as possible and this relates to gentle and straightforward stalling characteristics as well.

The Piets I have flown with no dihedral fly just great but for hands off, folding charts, reaching down for wayward sunglasses on the cockpit floor in flight kind of times the ones with a little dihedral don't wander as much in roll.

Mike C.