Have built Top Flt Stinson , 100", The wing bolts are inside cabin , they are s.h.cap screws , I use a ball driver to put them in . Problem is that my arm is over top of the plastic seats , touching them a lot , they won't last long at that rate . anyone got a better idea for the bolts going in ? Maybe a quick way to take seats out & back in at field , or fly without seats eh?