On each side of in the seat area there is a small tunnel that supports the seat bottom between the center console and side of the fuselage. These get bonded in and the seat bottoms attach to them with one screw. I decided to provision these to support the center attach point of a 5 point seatbelt harness. I used a piece of phenolic and bonded it in with flox. Then I added a 2 bid layup. I'll come back and drill the 3/8" bolt hole and countersink the other side and use a 3/8 screw for a flush fit.
