Sorry to jump in so late, I have the HK T6 Radio, not sure about the one you have, mine is V2. I have the Clark TK22 also, 3 actually,
anyways mine is setup like this,
CH1-CH1 Alieron
CH2-CH3 Elev
CH3-CH2 Throttle
CH4-CH4 Rud
This gives me all drive controls on right stick and all other controls on left, turett, main gun fire, machine gun, lights, start up etc.
You do have to rewire for the elevation recoil unit or it wont work properly. The Sony remote is a must if you ask me. I also found
using Tamiya Battle Units help to. You will have to rewire for the IR and Apple to work properly. You can use the Taigen but it has to be
rewired along with a new IR Emitter. I have a Taigen Tiger 1 Early, Taigen Sherman, and Taigen T34, all on Clark TK22 all with Tamiya Battle units.
Im just finally getting them dialed in.