Here is the route....

Starting from the forest road opposite Todholes, the route follows these stoney but well made paths to the foot of Meikle Bin's north-west ridge. Here a very boggy path cuts through the trees, soon reaching the open hillside where a much better path ascends the ridge to the summit. To make a circular walk, continue south off the summit down a grassy path to a firebreak at the tree-line. Into this, very rough ground is negotiated, two ditches are crossed, and a branch going left (east) is taken. On leaving the trees, the path improves again, the route eventually joining the fine forest road network again for the remainder of the walk, which reaches the reservoir and follows it's south-western shore.
The video shows the route and the terrain......