mich800 wrote:
I think it is the longer distance between where the pin is seated in the 2.5" hitch. The sleeve is taking up room but does not create a fixed point for the pin. It can slide fore and aft. So now this stinger with basically a 1/4" inch air gap on each side can get a little more leverage on the pin when it pushes and pulls on start/stops. Picture the set up without the sleeve and that will make you understand it is pulling more in the middle without that fixed attachment right next to it. Not sure if I am explaining it clearly in writing but I can visualize it.
It is no longer in direct sheer. Imagine putting a lightweight piece of aluminum or something through the hitch holes. Now reach in and pull in from the very middle. Then pull from either side right next to the hitch wall. You will be able to bend the rod much easier from the pulling from the middle compared to the ends.
That is what I was trying to say. Folks just stay fixated on the hole sizes in the sleeves but that ain't the problem.