Well, I ended up using the Auotglym Active insect remover which is not actually what they recommend and is an IPA based cleaner. It worked fine and I spent a very satisfying if at times frustrating day invisiframing the bike yesterday. Yes, it took me nearly all day! That was to do the frame kit and forks. I also bought a blank sheet to fill in the little areas that the kit missed.
Very pleased with the results, it’s very good stuff. Most of it went on easilly enough except for the top tube section where it curves up to the seat tube. I was getting very frustrated with that bit and was in danger of losing my rag until my son took over and finished that bit for me.