After solving the major problems I paid attention to some of the minor problems on my Pusher/Puller. It would pitch down at full throttle and pitch up at low throttle. I think that is what it was doing. It has been a year or so. At any rate, I traced this to the rear engine being a little higher than the front engine. A pitch down moment was being created. I put the engines in line, but the rear engine had to move back. This meant the front engine had to move forward to hold the CG. The end result is OK. Flies great. One of these days I will change the fuselage from 3/4 inch channel to 1 inch square tubing. There is way too much flex in the front wheel assembly. I carry a little nose weight in the form of lead, so a heavier fuselage may not add to the total weight. I also changed the main gear so that it was stronger with little increase in weight, and so that toe-in stayed positive with rear. This greatly improved ground handling. Here are two new photos showing some of the changes.