Sorry for another HP/torque post. I found it interesting that the Kaw 17 HP (FH541V) and the Kaw 19 (FH580V) are essentially the same block, displacement, etc., but the 19 HP makes better torque at a lower RPM and obviously more HP at the top. What gives? Is it the crank? ....carb? I have attached the specs even though they might be hard to read.