I would not dare go into the aft 2", but I can state that 3.4" of the aft limit at near gross weight was downright scary in my standard KR-2.
Brian Kraut Engineering Alternatives, Inc. www.engalt.com Most prudent KR builders/flyers consider the aftmost 2" of the published CG range to be unusable. But please... if anyone has test-flown their KRs loaded in that range and has documented the flight characteristics, let's hear it.
