So things happened and I was unable to maintain my pace and produce a model a day model a day. In fact it's been about a week since I started this model and only just finished getting the normals off it.
I'm still learning Zbrush and as such my understanding of different tools remains limited. As such where I have attempted to model the joints in the wood I've created some irregular shapes. I think next time I attempt to create such a shape I will invest a little more time into the base mesh in Maya to get the shape I want, using Zbrush more for surface details then structural shapes.
Still such an issue is and was fixable in Photoshop.
I need to pick up the pace more if I want that job.