Where is the balsa core located ?

[neon]

I am trying to assess my 78 Typhoon for Balsa core damage which based on tap testing I believe is limited to the cabin floor. Is anyone aware of a diagram showing where all of the balsa coring is located throughout the boatI want to make sure I examine every part where that got balsa core is located

Thanks
Dana

[Dick Villamil]

I believe the balsa core is limited to the cockpit seats and main deck. Unaware of any core in cabin below deck. The first inch or two around the perimeter of the deck is solid fiberglass - discovered when rebidding all hardware on my 1976 ty.