Well, it seems my Alclad base paints simply couldn’t adhere to the resin of the kit.
In my desperation I switched to my Mr Color black and it seemed to work. All the arsing around does seem to have had an effect on the finish of the paintwork, but after I’m done, I hope that this won’t be too noticeable.
I am going to put a gloss coat on this before I try any masking as I am concerned that the paint may flake off.
Model making one day at a time.