Ok bought a used nh br 740 this spring, so far the baler has done pretty good baling hay. My biggest complaint is the core of the bales are really loose. I know that nh cores are loser than deere and some of the other balers, but my neighbor has one and his seems to make a tighter core than mine. Ive been told it could be from not evenly distributing hay in chamber when starting the roll. I can see where that could be it but i bale like my neighbor even behind his rake and cant seem to get cores like him. Im wondering if belts could be stretched or the rollers that start roll could be wore. Any thoughts?