On my Legacy I have the 2004 Trutrak autotrim system with a DFC250 28v and all works well.  The trim speed is very fast such that a bump of the switch sets up a big pitch change.  I measure the full up to full down travel time which is adjustable on the module from 5-8 seconds only--very fast.  My certified aircraft run 30-40 seconds.  I wrote Trutrak and they said the unit has to come back because it says 24v but may be wired for only 12v.   I measured the voltage to the unit and it is fed 28v.  If you have one and have similar trim speeds you might want to think about a fix because there is nothing in the wiring diagrams that would suggest an error in installation.  The diagram inputs show 12-24v to the unit.  I'd be interested in travel times for other Legacy trims for comparison.

Paul
L2K-186