Chemie: That is the glue that I used. I lined all up marked the fuselage with a sharpie, then applied the glue and used masking tape to hold in position. I believe that the little bit of "spring" in the cowl lifted the masking tape around the edges.

I have refitted with servo screws abd have a good fit all around except for the front left where there was a gap of around 1/16" between the cowl and the fuselage. I placed a cloth over the cowl and used a heat gun on the high spot - carefully. It worked, shrunk nice and snug. I could now use the canopy glue and get an excellent fit.

Now to add some covering around the cowl edges.

Rick : I haven't seen the plastic polish before but will have a look as I have a headlight lens that could benefit anyway.

I have 2K MS primer for the plastic cowl and etch primer for the aluminium legs. Light coats, Sometimes it is easy to get carried away in the moment..... Thanks for the reminder.