I recently purchased a putnam xdr 16k receiver and after taking the stock hitch out and putting the new putnam on it doesnt quite seem to fit. Mainly there is a spring perch right in the way of being able to mount this hitch to the frame. Ive checked, and double checked to make sure i got the right hitch (part number 25189), checked back with the shop i bought it from, and the only thing i can come up with is that its for a longbed truck, but the website says it will fit both so im kinda up **** creek right now. Has anyone else ran into this problem? Maybe they just packaged the wrong hitch or something. I can post pics in a little while to be a bit more clear on what i am asking. Sure is a nice hitch though, i just cant use it yet.