I don't know that I would ease the main and the trim the jib, that would cause your jib to backwind your main and you will lose a lot of power. Try flattening the main so that you can depower it without pinching off the slot. I guess you would have to ease the traveller and sheet the main harder, and tighten up the downhaul and outhaul. That way you would still have good flow over the leeward side of the main, but the main won't overpower the jib so much. This of course is all theoretical thinking coming from a relative newbie. I'm going to try it next weekend to see if it helps. I spent a lot of time yesterday with the traveller almost centered (3" off center) and the sail was very full and twisting. It gave me great power reaching, but when it came to beating, I had to curl up and use my knees to help hold the tiller and the sheet.
Off topic a little: I remember a while back having a thread here about cleating or not cleating the main. Yesterday was the first time I was on the boat all day long. I learned the benefits of cleating in. I am now a cleater. I did fly the hull pretty high a couple of times before I could uncleat, but in the light to moderate air we were in, it was manageable. I don't think I would use the cleat in heavy or gusty winds.

-Rob V.
Panama City
Nacra 5.2