The main sail furler on my Benetau 461 (2000) is causing me lots of problems. On some videos I have seen people unfurling their main by just releasing the furler line and perhaps a bit of wind - I have to use a winch and still get stuck when just a third of the main is out. Even my winch cannot hope. I then go and pull and shake at the sail to loosen it some more (assuming the weather is OK). Stronger winds make it easier to unfurl but I am not blessed with such constancy. At first I thought that the problem was higher up the mast but noticed that at least at times just pulling at the foot edge of the main unfurls it as if the problem was with the bottom of the furler. I bought the boat as used and see that someone left instructions to never furl or unfurl without keeping tension on the opposite line. I do it religiously. The problem is still there. I checked the bend in the mast - it's about 2-3" off straight line half-way up the mast. Can that account for the problem? Are there any common issues I should be looking for? Thanks in advance - I found replies to my earlier questions immensely valuable.