If I ever get another TT, I'll be sure to get the 2.5" shank instead of running with a reducer. Yes, the reducer works but it has created problems for me.
Both the big Curt I have on my 2013 F350 and the stock hitch on my 2015 F350 are slightly warped in the receiver hole. Its not noticeable to the eye but now, some of my regular hitch ball mounts will not go in or are extremely difficult to get inside the hitch receiver. Both of these trucks hauled my heavy Work & Play with an Equalizer WD hitch using a reducer. Neither one had this problem until after I used them for several trips pulling the W&P.