Applied 1/2" wide, 1/8" thick rubber tape to cockpit tubing under the floorboard. Test flt floorboard. Measured nutplate pattern for the aileron servo mount plate and transfered it for drilling. Installed engine mount bolts in Station 1 locations ( be sure to install at least the lower engine mount bolts before final attachment of floorboard= you can't get them in if you wait until floorboard is installed).