Hi Trevor,
In the midst of the men’s shed I forgot the ground wire damn - no worries I will make a puller and remove posts. I haven’t done any finish coats I was just going to cover and plug the bushes before any coating. But seeing I’m pulling one bush out I will do both and then some apply some stain then top coats.
Yes using that diagram it’s pretty straightforward I’ve made a few hi fi systems over the years.
Once again many thanks
Graham