Horror of horrors.
Just got onto adding the glazing to find the the glazing sprue in the kit is the incorrect one. It must have been for a similar model as two or three parts look ok, but the glazing for the cockpit doors and the parts on the sides of the nose are too small. Retrieved parts from an Italeri kit which are the correct size.
Next job is to make some moulds from the good parts in readiness for a delivery of some clear casting resin - hopefully in a few days time.
First time I've encountered a wrong sprue; I suppose I should have been wary when the part numbers didn't correlate.