I realize this issue has been discussed fairly frequently in the past, but wanted to toss it out there again. I'm finding the centerboard is very hard to pull up. The assembly includes the block and tackle setup that has been discussed and from what I can see, the line appears to be the appropriate size and is on the roller. When pulling up the centerboard, it takes two hands on the winch, and a couple of wraps of the line around the winch will try to slip. Should it really be this hard to get up?