Thanks for the link lesligel very helpful.
Well thumbs up yet again for Revell. They have sent me another part, the forward canopy. Really great service. I have actually bought a new Revell kit as a thanks to Revell for all their trouble sorting me out.
Only one more kit to salvage now and that's my Airfix 1/48 Jaguar. I'll ask for help in a new thread. Fingers crossed..