[Amps] stepper motors

[KD7QAE]

I am (still) in the process of designing my dual gs35b amp and would 
like some advice on stepper motor selection.  I have 2 Russian vacuum 
variable caps that I want to motorize and wonder if anyone on the list 
has found just teh right stepper to turn these babys.  the tougher one 
is the 10 to 1200 pF unit.  I can design the controller and drivers and 
will be linking them tothe vacuum relay coil tap selector on the PI 
inductor.  The L section taps are selected by a manual switch which also 
sets the gross tuning position of the capacitors and the proper PI tap 
relay.  I intend on using rotary digital pots to make the fine capacitor 
adjustments from the front panel and then having the option of storing 
the exact setting as read out from shaft encoders for quick setting in a 
particular rig / amp / antenna setup.  Not autotune, but close.

Tomm, KD7QAE

PS, the plate choke is now done, removed 20T from one end and replaced 
w/ 5 wide space helical turns.  I need some power FT caps for the AC 
wiring section to keep RF off the line cord as much as possible, anyone 
got some?