Kingpin Extension?

[surfbeetle]

I have a 29" sleeper in the front of my 8' bed. With my old 5th wheel and my slider hitch, it worked fine. We just bought a new 5th wheel and the kingpin is about 12 inches closer to the front of the trailer then it was on the old trailer and it already is an angled kingpin. Obviously, this makes it harder for me to turn. I have looked at the RV5 10 inch extension from Popup as well as the FifthAirborne Sidewinder.

I took measurements and mocked up some drawings on my computer and it appears that I would get the best turn angle from the RV5. I know about the added stress on the trailer, but I don't really have a choice at this point. The only other thing I don't like about it is the fact that it raises the front of the trailer by 3 or 4 inches.

Rather than put the extension at the kingpin, I was thinking that it would be better to bolt on an extension at the back of the kingpin box that would basically move the existing box forward about 12". Also I was thinking that to help eliminate the stress of an extension, I could put on an air ride kingpin box.

So the question is does anyone make such an adapter to extend the kingpin mounting box or will I be forced to have one fabricated myself? Any other ideas?

As always, thanks in advance.