Had a cracking walk yesterday on BT and CA.
On the ascent of BT from Inverlochlarig glen the WH online description refers to a fence and a gate at 500 metres height, at NN 446192. The height is right, but the grid ref is way out. The gate is at NN 426188. It's not a big fence, but ascent to the gate and beyond gives you sections of small path on the ground.
On the descent from the Bealach between the two munros there is now a small green path all the way down to the track in Inverlochlarig glen, joining that track at 429204.
Happy walking!
Chris