Well I've had some success. I measured the distance of the prism from the attached assembly and found that it was 2-3 mm toward the centre than it should have been. It just took a few moments to re adjust. I would imagine that the only issue here would have been shadow in the main imager.
Initially there was no difference but then realised that the powered USB was off. Once turned on I had much better results despite the bright moon. I'm yet to do an imaging run but hopefully this will go well.
John
