Trailer hitch for fifth wheel

I would have liked for someone to finish this thread too but I've fought this since December too. I have a 2014 ram and it's bed is 6'4" on the inside. 6'2" along the rim but from pin center to the cab is 6'4". My pin is a lippert 1716 and it's long. I've already dimpled my cab. So got the slider everyone says I don't need. Not this reese slider and lippert pin box go right to the tailgate, and I mean up to it so it's all but worthless. I raised the truck hitch to its last bolts but that raised the trailer. I raised the pin box to lower the trailer and level it and that almost killed me and friends. Some say it's easy and 30 minutes. Bull with all respect. So the trailer can be level and hit the tailgate and sides or raised and more weight on the rear axle that I'm told is taboo. I've been told to change the pin box to the trailair 1116 but that's ANOTHER 900$ and someone to install it. And then it moves the trailer 6" forward or closer to the cab I've already kissed. But it clears the tailgate and sides!!! It's catch 22. Now ford has a bed 4 inches longer so the longer pin box fits - as I understand anyway. But this 400+$ then another 600+$ and now the estimate for the trailair installed of 1200 is starting to sting my retired hinnie!