I have a question about using the tail rib templates on the existing preshaped spars for the KR2.with the stab foamed up between the spars and the tip template glued in place would it be safe to fill the gap to make up the thickness of the spar by pouring in polyurethane foam then sand down to shape, or would it be better to cap and shape the spars with some more spruce, I ask this as my spars have already been sized to the original plans with the 5/8" sq. tips and i want to use M. Langfords profiles.
