I recently downloaded the B-52 H. Had lockup problems until I deleted Window 4. Understand the gauge that window calls for is faulty. I downloaded recently posted sounds for it and it is performing as advertised except that after landing and coming to a complete stop, the plane starts jumping (bucking) until it finally causes self damage and rgisters a crash. Its a beautifullly textured airplane and flys OK except hard to land smoothly as it tends to want to retain the "tail high" position regardless of trim or other control input. Have to really work the airspeed and rate of decent to get the rear gear on the runway before, or at the same time as the front gear. I plan to "stay with it" but would like to solve the post landing "bucking" problem. Would appreciate knowing if anyone else has experienced the problem. Regards, Jim W.