Some good news on the gunsight image problem, I managed to find some beamsplitter glass. The beamsplitter works great and only $20 including shipping to the UK from the USA ;D. Other work completed on the project includes the B/P pilots screen frame and I've almost completed the new build pilots seat.
Dude, I'm doing metal work in dt and I'm worse at it than a dead monkey. You however seem to have the right DNA. Do not waste your talent. Make the whole plane.