How would you bend this frame back?

Before you bend anything make sure the right side is not more forward more then the left. That alone could account for the shape I see. The factory service manual has detailed adjustment procedures.

There's a virgin section of my FSM. I almost went snow blind from the reflection off those pure white pages. The clutch, transmission, electrical and suspension sections are so grime stained and dog eared from the last six months, I've had to use packing tape to repair the book's binding in multiple places. Lots of good top frame adjustment info in there. Including some information on fixing that air gap between the top side rails and windows. I may be a month getting deep enough into this to report back, but I'll report back to at least acknowledge all the help you guys have given.
:thankyou: