Skyknight,
It would be simpler if you use the Landing Program to set full flaps instead of one of the mixes, that way all you have to do is plug in your elevator offset on the Landing screen. I had my Maverick set up similar to basimpsn with a few exceptions.

With the 3 position switch in the middle flaps were up for normal flying. For take off I used 15 deg. flaps. One of the program mixes was used, activated by the switch in the ELEV position. No elevator offset was needed with that flap setting. If you are using more than that for partial flaps and need some down elevator you could use another program mix to put in some down elevator, also activated by the ELEV position. That could be done the way basimpsn suggested or you could mix elevator to elevator and put in an offset value.

For landing I used full flaps, set to about 50 deg., using the landing program. Also the elevator offset was set to give about 1/8" of down elevator.

So for normal flying the switch was in the middle, in the ELEV position for take off, and in the LAND position for landing.

Joe