Out of four builds, the first plane off the shelves were the best in flight. They had some construction issues that were improved on in the latter, such as the wing hold down area in the fuse compartment, etc. The differences I found from build to build over three years was mainly wing incidence. The third and fourth showed positive incidence which was easily corrected.

According to GP, the firewall is supposed to be completely neutral, as the engineers tried to compensate for thrust by offsetting the vertical stab, which could have been effective with smaller engines, but proved to fail with more power.

Although allegedly neutral, I feel that there is some down thrust in the firewall, weather mistakenly built or purposefully installed, as to the way it leans on its back in a hover.

Presently I am convinced that the coupling, or dive to the wheels in KE, is due to the high placement of the horizontal stab, as it is not so evident in the 46 size with a lower placement. The rudder seems to wash out any airflow over the hor. stab and is causing it to stall.

Aileron coupling in KE was stopped on mine with the removal of the upper part of the rudder, and tapering the trailing edge.

Look where the two dowels go through the landing gear block and add a third dowel in between the two existing ones. If you put a finger down the compartment to the top of the landing gear block you will feel where you can slide in some tri-stock in each vertical corner. Mine will snap the tee nuts before the block is compromised. Light and strong and puts the support where needed. Good luck with the build. Joe