I have a Janome Magnolia 7330 and love it. I just measured it and it is 6 1/2" from needle to arm & approx. 4 1/2" high. I make mostly lap/baby size quilts but have made larger on it. I have not had a problem with quilting these quilts. I think it's a matter of learning the best way for each individual in maneuvering the quilt through the throat of the machine. I'm sorry you are not happy with your long arm.