When I bought our boat (28 ft Santana } it had a 150% headsail sheeted to a track on the gunnels, but it
was too big for Missus and me to handle so I changed it to a 110% sheeted to the tracks on the deck.
However the sheets are always overriding on the winches. The cars are as far back on the track as they will
go ( closest to the winch ) and it sort of "looks" OK to me, but is this the problem ??.