Arbor Low can be a bit tricky to find on the first visit. Typical afterthought is I should have mentioned that parking is opposite the entrance to a farm or just before the farm off the driveway (Sorry).
Litchfield cathedral? Well it's a beautiful place although no where near the peak district LOL.
One of the few advantages of the F100 over the F80 is you can take it out in all weathers, but the F80's a good little worker for most things as you will have found out.
Look forward to seeing your results