Decided my drain tubes were blocked, tried springy wire thing up from underneath, no go, air line underneath, no go, bit the bullet and took saill panels off. Not as easy as sounds, both screw covers to high level light broke, top trim panel wouldn't come off, centre fixing wouldn't let go, but managed to twiddle it clear, and sail panel fixings broke off in most cases
Used hose pressure to blow clear and hopefully now OK. not as easy as posted!