DHC-6 & AC500S pitching problems...

Hi All:My two main aircraft that I fly are the DHC-6 & the Aero Cammander AC500S. When I'm on approach and trying to fine tune my descent, I use pitch up and pitch down occasionally to correct things. Also, trim up and trim down. It seems as though FS9 remembers each press of the button(s), and when I'm reasonably close to good settings, the aircraft suddenly pitches up or down, depending on the last few button presses; (either up or down.) I swear, FS9 remembers them, counts them up and then flushes them out, in a great pitch up or pitch down attitude!Anyone else ever had this problem? I must find a solution for this.I've deleted fs9.cfg a number of times...uninstalled and re-installed both aircraft a number of times.My system is: SOYO P4PGA Celeron 4A 2GHz Radeon 9200SE 512 MB XP ProAny help will be appreciated. Reply to [email protected] if you can.Thanks, folks...jncameron