Good shout. Trying one on an Orange 5 myself and struggling with lining up the guide.
How did you get on with rubbing of the chain on the device jam bo?
Biggest issue for me is having to fit the guide, and tightening the BB with the guide straight - then finding that it shifts in the installation. And 'straight' is actually hard to assess.
So always end up with rubbing - though tend to find its more running on the front (exit) from the device. Plenty of room at the back. Tempted to spin it fwd a bit on its axis.
Also did you use the two supplied spacers? I've used one either side of the device mount and taken the normal 2.5 spacer away from drive side.