Purchased a Bobcat 36" with 15hp Kohler Command. I love this thing, has cut times in half, cuts great, and had enough power but...............I was mowing this morning at a local park, put my 2 wheeled sulky on and it struggled pulling me. Sometimes I found myself doing like a skateboard, one foot on and one pushing us along. I have used it before at the park with no problems, just some slowing down with wet grass. 1 thing, the grass was kinda tall, but no taller than usual. So what's happening, I only weigh 165 lbs. Is there something wrong with this thing or does it just not have the power to pull me. HELP ME. Has anyone else had this problem with thier w/b's or Bobcats?