The track to Monserrat is easy to follow & a good opportunity to warm your leg muscles as you ascend from 550m to ~1000m on this 1.8km leg of the trek.
From Monserrat, we said goodbye to an easily followed track. We said goodbye to the open eucalyptus forest. We said hello to push-your-way-thru dark rainforest & headed SW across a hidden saddle to a nearby (600m leg) un-named peak. Note: there may be a discernible track from Monserrat to Mowburra..........but we didn't find/follow it.
Much of the time you could walk under the spectacular overhead vegetation but at times, that same spectacular vegetation, was in your face & making the going difficult. The 360 degree views from Mowburra Peak are wonderful. I have done Mt Greville a few times and the 'scars' that are Palm Gorge & Waterfall Gorge are very obvious from Mowburra.
Heading easterly along the ridge from Mowburra takes you to a 1.8km slope off the mountains back to Yamahra Ck. At this point, have a quick motivational pep talk to your leg muscles. It takes an hour & a half to make the way down a steep slope (descent of 400m) thru knee high grass hiding rocks/holes/branches/logs. My advice is "Keep Calm & Carry On". At the bottom of the slope, head towards Grace's Hut [Note, Warning, Achtung: I am unsure if this is private property

From the GoogleEarth view, you can (hopefully) see we followed saddles, slopes & ridges to make the circuit. It took us ~7.5 hours. We were able to complete the walk with the directions from the GPS file (see Wikiloc, search for Bluefreddo) although we completed the circuit in a clockwise direction (Bluefreddo walked anticlockwise).
.........all up, a good day was had by all

Shawn