Steven; looks better! (handige vrouwen heb je in je familie!)

Hi

actually it was "fairly" simple.
I took out the front board and removed the metal strip and the tolex on the rear and the sides (left the front tolex in place).
I went to the DIY shop and asked them to saw of a milimeter from both short sides. Actually I still had to do some serious sanding after that.

We used a staple gun to attach the cloth to the wood. starting with one of the long sides. This cloth has straight lines so aligning was fairly easy.
then we did the other long side making sure it was tight (no hard pulling! just straightning) and nicely alligned.
The hardest bit was doing the corners. you have to cut away as much fabric as possible or it will leave a thick lump in the corners. but not to much. Just f9old it tightly over the corners.
Sanded down the metal strip a bit and made sure I used the same holes when putting the nails back in.

Even I could do it.