Weaknesses that plagued the TR. - small shafts, upgrades were constant right from the TR70 on up - undersized cleaning systems. The more horsepower they put on the worse it got. - small uncomfortable cab - drive systems that were undersized. Especially the rotor drive belt. - return elevator system that was grossly undersized, and was a constant source of trouble. All of the above have been addressed on the CR. Convenience and Service: - in cab adjustments for all major settings, many of them preset automatically with the computer. - header hookup system takes less than half the time of that on the TR. - side shielding that opens up for service and lubrication. - service platforms that let you reach hard to reach areas for lubrication or adjustment. - one bolt adjustment for grain elevator chain tension, from the ground. The cab has some room in it so you can actually take some lunch or water with you without stumbling over it all day. Finally, if you think that you don't need to operate one to help you decide whether it is a good machine or not, you really don't want to know much about it. You are right, the TR was a good machine, its just too bad it was brought out of the oven so many times when it was only half baked. I can't speak for the TR99 because I never had one, but the TR98 was the first really good combine we had, and that goes right back to the TR70. As for the CR, time will tell, but I would suggest that they are on the right track.