Hi Don, Thank you for the reply. So I already chiseled out everything to the original underside roven/MAT. Should I just leave that intact and glue spacer strips over the stringers? I wanted to use 1/2 inch coring material, but most on this site seem to go with 3/4. The original was 3/8 balsa / wood mix core, so I'm thinking 3/4 may be overkill and extra unneeded weight?
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