Flap needle alignment

I was wondering if anyone here could help me get my flap gauge to indicate correctly using the servo phidget. I thought that I had read something on this site that talked about getting the needle to move to the correct position on the gauge face. Right now I am still using the keyboard to move the flaps to the various detents so bear with me on this one. Starting with the flaps up I hit the F7 key to move the flaps to the first detent and the needle moves to 2%. BTW my flap gauge reads from 0 to 100% (C-130 flap gauge, it reads in percent not degrees.) The second tme I hit F7 the needle moves to about 18%. The third hit moves it to about 42%. The fourth hit of F7 moves the needle to 100%. Ideally instead of 2, 18, 42 and 100% it should move 10, 20, 50 and 100%. So how do I get it to move to the new positions? Is it in the aircraft.cfg or a function of fs2phidgets.ini or something completely different? Can someone please point me in the right direction?

Let me have FSValues for each of yor flap settings.

The FS Values are:

Up=0
1=2730
2=5461
3=8191
DN=16383

Thanks in advance,

Dan Relfe