Ok kinda a long story but here it goes........My mom uses her "botie" in her daylilly operation. It has a 400 pound tiller on it and thats all. No loader or loaded tires or grill guard. I'm concerned that on some of our steeper grades here that she might lose traction up front going up hill. She is in her mid 70s and might not recognize that her front end is light. She's very picky about her tractor and only genuine kubota weights will do (paint matches). My question is what size weigth will fit best on this tractor and what sizes does Kubota sell? I notice it has a small bracket in front and I thougt just fill that with Kubota weights would be a good idea for her. Thanks for any insight you might give.