I am not familier with that hitch either.
But part of the problem may be that the hitch is too big.
I like overkill in just about everything I do.
But a WD hitch is not on the list.
The bars are working springs, and they MUST flex to allow for the TV/TT lashup to go over bumps, dips, driveways etc.
So the proper size is important.
Think of it like shoes. If you are a size 10, then a size 14 shoe wouldn't work very well.
The right size is the right size.
A lot of people like to overbuy, so it will work on a larger TT in the future. Bad advice.
That might not ever happen. If it does, just sell your old one and get the right size for the one you are getting.