I ended up doing about 90 km on single track and forestry tracks, and the bike ran flawlessly 
For those that want to look it up on google maps, I started & finished in Lochcarron. I rode East to Achnashellach on the A896, then A890. At Achnashellach about 1/4 mile past the railway bridge I turned sharp left and took the forestry track back towards the Achnashellach railway station. Then I took the sharp right at the crossroads and followed the forestry track for the next few miles over the Coulin pass where eventually it meets up with the A896 near Kinlochewe. As I joined the A896, I went left towards Torridon and followed the single track road back to Lochcarron.
It was a nice ride out seeing scenery that I haven't seen before and using the bike in the sort of environment it was designed to go in
