Good Catch on the size of airframe. At this point I'm ready to back up and punt. The only thing I have to go with are the wing calc numbers and refering to the "pictures" yes I said it..... pictures of both manuals. The .46 shows the CG point well in front of the wheels and wing tube and in the manual for the 71 it shows the CG point located right at the wheels and just in front of the wing tube. I'll bet I can fly this thing nose heavy better than I crashed it tail heavy...... If anyone has any better suggestion let's hear it.