Hi, a friend is looking for a tractor, and I saw a 4x4 Kubota L2550 with bush hog brand loader. Are they a decent tractor? I think they have a 3 cyl diesel. What are things to watch out for (I know the obvious like clutch, injectors leaking, tires, that kind of stuff but anything that was a problem on these)? And what is a fair price on one?