21xd with 250XS. torque master lower with 1:62 gears. I am trying a 26 Pro max. My motor is 3/4 below pad. I did do a little running at this set up but it felt like it hits a wall at 78.. It is good on hole and mid and handling. I think Tim had suggested 1/2" below with the Pro Max when I was inquiring about one a while back. Does 1/2 sound right?