It no longer looks twisted to me, either. If the bolt travels smoothly through the rails and it mounts to the stock as well as it seems to do so, then I would say as someone else already has, that the top is not machined properly. It all comes down to finding a way to grind/mill the top surface so that a scope can be mounted square and level to the bore.
If it were me, not having access to a mill, I would grind it as close to level as possible then use JB weld or Devcon 10110 to not just bed, but permanently mount a one piece base to the action then use Burris Signature Zee rings hoping the shims will make the scope straight. you might have to drill and tap new screw holes so they are aligned perpendicular to the top after leveling it. I think I would assume the front screw holes are aligned correctly, mount one piece rail with the front screws, then use the rear screw holes on the mount as a "gig" to determine rear screw spacing. Don't worry if the rear holes are sloppy, just drill a place for them and use the Devcon to anchor the screws and to fill any sloppiness.
I say all of that because I doubt the cost of dong it "less crudely" is too great. I'd rather toss it and start with a new receiver than spend a lot of money on it. When you're done, it will either work or it won't. It is what it is. :)