The handbrake adjustment is buried in here:
Drop the exhaust and support it with the transmission jack
The heat shield studs are mostly broken
Or held in with self-tappers
Tunnel brace off
This heat shield drops down and then the rear one can come out. The plate at the left if this pic also comes out
Then you can see the handbrake adjustment above the propshaft
I was able to get to it over the prop with a long extension. I tightened it until the rear brakes started binding, then backed it off a turn. In total it needed about 4 turns.
With the adjustment done I supported the exhaust so I could lower the lift and check the handbrake applied and released ok from the cabin. It did so I put it back together
I don't have a rivnut tool so I temporarily replaced the heat shields using more self tappers. These will do until the engine comes out, whereupon I will replace them with enclosed rivnuts.
My printed headlight level sensor bracket has been catching on the anti roll bar so I will need to redesign this slightly to make some clearance.