i just bought a used 44" toro wb with a 14hp kohler engine. the machine keeps pulling to the left. ive tried to adjust the rods on the side but i can't get the mower to go straight. another problem, the belts were new and i understand they need to get broke in but the belts seem like they keep stretching. i adjust the rods so the mower will pull but when i get to a hill it won't pull. is there any solution for adjusting the tension so thst the mower will go straight and pull on hills and flat ground without having to keep adjusting the tension rods. i'm starting to believe this is something i'm going to have to live with, but i hope not.