Back to the 2 x 2.5 inch sleeve. When a 2" shank is used in a 2" receiver and the same with a 2.5" shank is used in a 2.5" receiver, the pin holding it in place is placed in a sheer condition due to the limited space between the opposing surfaces. The pin as supplied from a reputable supplier has the necessary metallurgical properties to perform it's job holding the receiver in place, safely.
Now, when the sleeve is used there is essentially a 1/4" gap on each side due to the sleeve being free floating. The pin is no longer in sheer creating unpredictable failure points. The pin can and will bend making removal without hammer and punches, or torches almost impossible.
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