Can you give us a link to the thread you reference? I don't think I have seen any problem with the slideout, but there have been occasional fit problems with the swing hitch and a number of different hitches, not just the Equal-i-zer. It has to do with springbar length, and where you can mount the springbar hangers.
The Equal-i-zer is a good hitch (though a bit expensive for my taste), and many of our members use one. Have you used the Search tool on the term "Equal-i-zer"?
Bill
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