thanks E. I did just look at that exact page in the plans and determined that the bolts are definitely too short and for all i know the other bolts are too long, which I could adjust with washers. I have not put the nuts on the lower bolts, so I don't know the answer yet. The question for the upper bolts is should I get 25 or 26 and why are the 24s too short. I thought Van's Quality control was better than that. I figured that worst case the bolts would be long and extra washers used.
It took a lot of work to get all the bolts in--used ratchet wrench and push on the bolts. Only two slid in, the rest were a pain in the butt. Maybe not an issue, but the top left bolt head does not sit flush on the end of the tube. One side of the washer barely touches the edge of the tube. In other words the bolt is tilted outwards and is not straight.