Without seeing exactly what you're doing, I suspect you are turning in too early. Try turning in, and apexing, a little later. If you're not trail braking, when you turn in you are committed to a given curve with the speed and lean angle you have. If that curve is placed earlier on the turn at the apex, you'll be wider on the exit. Try going in just a little deeper a see what effect it has. Do things like this in small increments and you'll be able to make the adjustments more safely.