The first thing to do is get rid of the piston hanks on your sail. Piston hanks take two hands to operate and they can get jammed with salt.
Switch to Wichard hanks. They only take one hand to clip on or off and they never stick.
This change alone will solve all of your problems. I only use Wichard hanks on my Olson 30 and after some 1,000 sailing days I have NEVER had any of the problems that others claim to have with them.