Spektrum DX6i and TK22...tweaking?

[43rdRecceReg]

Back in July, I knew nothing about rc tanks; zilch, so bear with me, tankers. After installing the Clark board in my Tiger 1, I have practically all features working (barrel recoil not..), but wonder why all the left stick options appear inverted, relative to the Clark, and associated literature?
In a way, it doesn't matter.. as I can learn the required patterns. Perhaps, I was premature in saluting my efforts, though, and rushed my testing. I've found that sometimes I get the elevation sound with little actual elevation. Indeed, the North/South poles on the left stick seem to
trigger nothing, yet all things are working: mg; turn; airsoft; lights; engine off/on etc. All except full elevation, so I wondered whether this might be a calibration issue. Anybody know? I cut the wire between the elevation unit and safety switch, and soldered in a connection between the switch and green + (common terminal for lights/ mg etc.,) on the 8-pin connector.
If you look at the new Taigen Airsoft gun with Barrel recoil servo attached, it's quite bulky. In fact, with the new wiring, it barely clears the sides of the turret ring support plate. Maybe the wires are snagging the plate. For that reason (and I've looked at previous discussions on slip-rings) I fitted a Taigen 360 deg turret ring/slip ring kit, but that didn't include the recoil servo wires. I've ordered a slip ring with more wires, but wonder whether they can cope with all the new functions: the wires are incredibly thin (therefore high resistance) compared with existing wires. I could double up in some cases, but I think the recoil servo (triggered at the same time as the airsoft shot) might need more juice than the slip ring wires can provide. Maybe. Without knowing the consumption ratings for the units, I can't say.
The power to the barrel recoil servo comes from the Taigen provided battery/board connector. Ideally it would be good to connect the servo direct to the 'Real recoil' connector on the Clark board. Anybody ever try that? Also, if the elevation unit connected directly to the 'elevation' connector..that would be logical.
A few other observations from a newbie's stand point for fellow newbies:
1. In my appraisal of the Clark tk22, (Hard Transplant)..'Pros' I forgot to mention its compact size, and that it fits neatly in the box just vacated by the Taigen/Heng Long you removed.
2. the Tiger sounds are much better than I thought: the engine acceleration feature is really welcome.
3. it's a pity that Heng Long/Taigen/Torro didn't produce barrel elevation independent of airsoft at the outset...
4. If the stock 2.4ghz systems from Taigen/Heng Long had better proportional sounds, buttons for smoke and volume (new Heng Long TX has..so they listen, I suppose), with two-way elevation it would make for a great start into a great hobby.
5. The Clark upgrade also requires a TX upgrade, and this means lots of features on one left stick: a recipe for 'arse from elbow' moments.