I just purchased an Ultimate model wood stove from J.A. Roby. Very pleased with this stove on all levels except one. The stove has 2 options for blower fans, the first are twin fans about 4.5" x4.5" each. I find they don't blow air worth anything at all. They also sell an upgraded blower motor rated at 460cfm but its at an up graded price!! Anyone have a cheaper and effective solution for me?