It could also be you are nose heavy. You should be able to do a reasonable rate 1/2 roll on an up line with no rudder. Especially with the size of today's pattern planes. Even on a 4pt roll, you only need to bump the rudder as you get to the point, not constantly flying it as it was years ago. These new pattern planes have nearly as much side area as wing area and as such do not need near as many rudder inputs as years ago.