I phoned the paint supplier today and he informed me that the Non-Isocyanate Laquer Is an Acrylic based product as you said I think it is what we refer to as being laquer, the product is fairly new to the market, He also informed that the Base coat I am using is a polyester type, I asked him about the problems I am having and he informed me that Clear coating to quickly can cause solvents to be sealed into the base coat bellow, I must admit my original Clear coating went on just 20m mins after final base coat was layed down, I probablly am rushing the work to a degree and not letting the surfaces cure to specified time scale, I am a busy man with a toddler to attend to so I try and do as much to my car as I can fit in a shorter period of time anyway, I fluffed in some primer 2 days ago and then sealed the section in with my clear coat. The primer still wrinkled at he edges but I carefully rubbed down before clear coating, The plan now is to leave the clear coat for 2 days and then mist coat my base on top of it, The rest of the roof's clear coat has been compounded and keyed with ultra fine grey scotch bright pad. I will allow my repaired section 2-3 hours to dry then do 3-4 coats of Clear over the whole roof.