I had to take my Super Z in the other day and get the choke cable replaced and had to cut with my 44 Toro wb. I had forgotten what a difference there is between a wb and zrt. I had taken the zrt for granted. When I got home my back, hips and ankle (which has issues of its on) where all hurting and every thing took so much longer. Getting my z was some of the best money I spent.