This gun plate was designed to cover the forward-facing .303 machine gun housing on the Airfix 1/48 scale Anson. I don't think the Anson trainers in Canada were armed, so here is my quick fix.
(Of course, after I drafted, printed, and attached my plate, I found a photo that shows a better representation than I originally built. (as seen in my primed fuselage half.)
The fix is easy though. Before printing, reduce the "X" and "Y" scale by 30%. Also - the thickness is very thin and fragile after curing, so do not reduce the "Z" scale at this time, rather, after it is printed, sand it as thin as you need.
OMG..... OR..... You could simply use part #17 ? IDK...