I must put my two cents worth in. I am a real world Huey U.S. Army Pilot and have approximately 2000 hours in the UH-1H. I bought your Huey Sim and love it. It fly's like the real aircraft and if anyone wants to get a "feel" for seat of the pants flying that the Huey gives , this is the one. However, there is one small issue that I'm having and I'm not sure where to report it. I have abnormal collective flutter. When I land at flight RPM and sit for more than one minute, the collective will pull pitch and over torque. Is there a patch for this problem.