This is Ironic.
I just picked up an '86 350x for my wife also, with a cosmic quad seet. And it also has a twisted neck. Let me know if you are succesful on getting it strait. I can see where it's twisted on mine. Its right where the backbone meets the two smaller frame pieces that go under the seat. I also have a Goki I got to figure out how to install on it.
YAMAHA 450 HYBRID
85 350X- RED
85 350x -BLACK
86 350x-WHITE (with Goki)
85 250r
83 atc 70
84 atc 70
84 atc 110
09 yfz 450
2006 Arctic Cat Prowler
RZR XP 900