Recent experience leads me to believe balance on a 4* is sensitive as it relates to landings. A spinner recently broke and was replaced with a prop nut. The weight difference was only 1oz less but elevator trim changes were necessary and landings were different. Also the airplane has a very light wing loading and wants to continue flying if the idle is the least bit too fast. Bouncing seemed to stop but there is always the possibility that I simply had a good day.

Bill