I would first try to adjust your seat....which has some limited ability to slide front to back.....and see if this is sufficient.I have a question, in case there's any advice. I would like to reduce the reach a little and that is quite complicated given the futureshock. Before going ahead, does anyone know if that would make the steering unstable? As you can see, steering control is fairly important on these tracks.
A "shorter" stem would also provide the relief that you seek....but as you already know....this is complicated by the monies that you have spent on a Future Shock stem. I am not familiar with how the FutureShock is mounted. I bought the Vado 4.0 which has a standard stem and I did replace it with a RedShift suspension stem.....and this type of stem is available in differing lengths and degrees of angle....enabling a rider to have more/less 'reach'. Certainly your bike could be modified in a similar way....but it would be nice if you could do so and keep your (already paid for) suspension stem system.
If the seat alone doesn't work for you.....changing your grips might also provide some (limited) reach relief. Of the few mods that I did on my Vado SL 4.0......the change to Ergon GP3 grips is my favorite. These grips have 'horns' which are surprisingly stable....and the palm rests that they provide extend back more than expected. A combination of a grip such as this one....and seat adjustment might be enough to 'do the trick' (if you are lucky).
Beautiful photos!!....and thanks for the whisky! That terrain is beautiful but I am surprised that you chose the Vado SL to enjoy it. Perhaps I am a wimp....but my Vado SL rides mostly on smooth-ish asphalt and some occasional gravel to ensure that my teeth remain intact. I can tell you that by necessity I put 700x42 tires on my Vado SL and it REALLY softened the ride compared to the 38's that come OEM. I believe that you could even go a bit larger and it would REALLY be more comfortable on that Scottish terrain that you photographed.