As you can see most every KR is different. My KR is stock KR2 with fuselage extended 24 inches behind the forward spar. My dimensions are: 154 3/4 inches from forward face of firewall to rear of vertical tail post, and 23 inches from rear face of firewall 1/4" ply to forward face of front spar. Standard KR2 tail surfaces with the exception that I moved the horizontal stabilizer forward 2 inchs from plans location for smoother faring to the rudder. That moved the forward vertical spar forward 2 inches also which slightly enlarged the vertical stabilizer area. With that exception, all tail surfaces are built to plans. I would like to enlarge my tail area as Jeff Scott did but I'm not willing to take it out of service long enough to make the changes. I enjoy flying it too much the way it is.
Larry Flesner