Wayne, reference pg 18-06 of the plans, the rod end bearings measurement is 11/32, not as i said previously. It is the critical measurement to strive for. This assumes that all the other measurements for the controls to the flaperons are accurate, ie. torque tube lengths, etc in your construction previously. Ideally, what you are trying to do is get both flaperons when positioned to up, no flaps lowered position, to be completely faired with the rest of the wing while the sticks in the cockpit are absolutely vertical. Yes, clamp both flaperons at the same time, carefully, to the tips without the flaperons connected to the actuating arms for the flaperons while maintaining the control sticks vertical, don't let them move at all, tape them securly. Then make sure your rod end bearings are screwed in with the 11/32 measurement on all 4 rod end bearings. Then re attach the rod end bearings to the actuating arms and this should be the proper alignment for this rigging. If you do this, the flaperons and wings should be symmetric across the longitudinal axis and should solve most of your roll problem. If it does then a slight roll can be solved by pinching the trailing edge CAREFLLY and minimally to take out the rest of the heaviness. If you can not attach the rod end bearings and arms at this time, then you have to adjust the torque tube lengths keeping the sticks verticle until you can. This is a lot of work and goes easier with 2 people. I hope you do not have to do this as it takes a lot of time and work. I personally had to re-measure all the torque tube distances before I got to this point as we had mis measured multiple times and created a bigger problem for ouselves. If you are sure all the other linkages are correctly measured, then this should solve all of your problems. If not, it may call for pulling up all the cockpit floorboards under the seats and realigning the linkages to get them absolutely correct length with a verticle stick position first, then doing the alignment of the flaperons as in the first part of this post. Unfortunatelly, Vans did not put any access cover plates at the back of the flaperon pushrod tubes in the belly of the fuselage to allow easy access for this alignment and adjustment. Just a side comment, the accuracy of everything in this kit is absolutely amazing!! We created our own problems when we built our 12! My opinion is, that, if you are very careful and precise during your construction and measure multiple times with the same measuring device before final assembly, this airplane will be as true and accurate and will not need much tweeking to get it to perform as advertised. Remember, garbage in garbage out, also applies to aircraft building. I can not sell the product any more than I already have. In fact, we are building an 8 also and it does not have nearly the same precision engineering that the 12 does. Hope this helps.
Doug Robison
