I have a 1025R with an imatch hitch. The one implement I bought from the dealer with the tractor has a top link bushing that just glides smoothly into the upper hook on my imatch hitch with no free play at all. My other implements I have converted myself to imatch using either the JD official kit, or the kit from Tractor Supply. The kits come with two upper bushings - a cat 1 to cat 2, and a cat 2 to cat 3. I assume that these bushings are both to be used, one inside the other, making the upper a cat 3 pin size.
The problem is that none of these cat 2 to cat 3 bushings fit easily into the imatch hook like the one the dealer installed. They are so tight that I have to use a sledge to hammer them down until they bottom out so the lower latches will engage. And I usually have to drive them back out to remove the implement. I've tried each bushing just by itself too, and they all seem jut slightly too big to fit the imatch hitch.
So, I've removed the cat 3 bushings and am just using the single cat 1 to cat 2 bushings. They are a sloppy fit, but sure make connecting and removing a lot easier. Is there a reason NOT to do this? Is there perhaps a slight variation in diameter of bushings from different sources, and was I unlucky enough to buy 5 sets (2 JD and 3 TSC sets) that are just too big? All the implements seem to work fine just using a cat 2 bushing in the upper position.