I had fitted the binnacle and bulkhead some time ago but left the instrument cluster fitting as I struggled with how I was going to get it to fit into the right place whilst getting a good finish in the opening I needed to cut out. This was my solution. With a small disc cutter I cut out a large part of the area where the cluster would go and then with a file, sanding blocks and the disc cutter I got what at best could be called a good fit. The reality is the opening I had formed was pretty ropey. Although the instrument were all visible it just looked scruffy. I saw some "D" shaped soft rubber door seal on one of the stands at Stoneleigh so I had a length. I split this down the curved section and put it on the binnacle and pushed the instrument cluster against the flat section.This looked much better. With this done I took of the rubber strip, wrapped the cluster in cling film and holding it in place Filled the area around the cluster with expanding foam.. Once dry this gave me a "tube" the cluster would slide in and with the rubber strip back in it makes a reasonable job.

I will add a photo of the front when I can find it...