I placed the C-661 canopy slider block on the C-762 canopy slide rail. I placed the WD-640 canopy frame on the fuselage with the slider block in the receptacle. I marked the location to drill for an AN3 bolt. Using a wood jig, I drilled a #10 hole through the slider block. I then clamped the slider block in the frame receptacle and drilled a through hole with a #10 drill. Last I trimmed the slider block in reference to DWG 43.
