A couple of weeks ago, I attached both wings for the first time. After attaching both wings, the stick was moved left and right, no problem. Raised the flap handle to the first detent and there was some resistance. Raised the flap handle to the second detent (full flaps position) and there was a severe jamming problem. Few days later with the 12 back in the garage with the wings removed, my helper applied some lateral side pressure to the right flaperon tube (WD-1214-R) and the stick was jammed in the full flap position. Removed the gas tank and two tunnel covers. Slight lateral pressure was applied again to the right flaperon tube by my helper while I observed. The end of the AN3-10A bolt (Refer 32-06) Figure 3 (attaching the flaperon pushrod) going through WE-1215-R (right side) was hitting the the other bolt. The orginial installation of the AN3-10A bolt on the right side as pictured in Figure 3 of 32-06 was correct. Just enough lateral inward movement of the flaperon tube on the right side by attaching the wing caused the jamming. Now forward to 44-05 for those of you who have installed the auto pilot. Ref Figure 1, the AN3-10A bolt on the left side has been replaced by a longer AN3-14A bolt to facilitate the attachement of the Roll Servo Pushrod as depicted and highlighted in dark print in Figure 1. This bolt has also been reversed i.e. head of bolt is inward instead of outward. Now the cirtical point. As to the other bolt (the AN3-10A on the right side), Figure 1 (44-05) shows that bolt now reversed but in subduded print and there are no instructions as to reversing that bolt. Since that bolt was not highlighted nor were you instructed to reverse it, it did not occur to me to remove the bolt and turn it around. It also appeared there was enough clearance between the bolts but after attaching the wings, there was evidently just enough lateral inward movement of the flaperon tube to cause the interference. IMHO a very critical omission in the instructions. To those of you who have installed the auto pilot or are going to install it, make sure that bolt has been reversed to avert the possible jamming of the flaperons. By the way, N7185A, serial #120164 is now an airplane. Certification recevied yesterday. Thanks to all of the RV-12 builders who posted their comments and informationon this forum. I know that many potential building mistakes (especially by me) were averted by your postings. Your information has been greatly appreciated.