We acquired a 1982 O'Day 25 this year (our first sailboat, hooray!) and started sailing her recently. She's a centerboard model with a 110 genoa. I seem to be having an unusual problem sailing her on broad reach. I learned sailing on J-24's and I am sheeting in the genoa exactly the same way on my O'Day, however I just can't get the genoa to fill with wind on broad reach and telltales are never aligned with each other. On J-24's we would easily be able to maintain the 45 degree course from the run, but here I can barely fall down some 15 degrees from beam reach and that's it, after that I can't control the genoa anymore: ease it out a bit more and it starts twisting around the forestay, sheet it in a bit more and it starts luffing. Having said that, close haul, close reach and beam reach are all working fine for us, but we just can't get a handle of sailing her on broad reach. I seem to be missing something simple, but I can't quite understand what exactly. Is there anything unusual about this particular model that I need to consider? Any advice is much appreciated ahead of our next sail this Monday! 