it's interesting that the rep has pushed the meeting back to monday. the shop at that dealership might end up being a busy place this weekend
might not hurt to make a surprise inspection saturday afternoon (with a friend) just to see if there isn't a frame replacement (that is supposed to have already been done) underway
btw, i would take a camera and tape measure along too. if the machine is still as you described earlier, at least you can get pictures of it. if they replaced the frame, then things shouldn't be crooked... right? it might not hurt to check the underside of the hood to see if there is any evidence of damage repair... maybe they just fixed the original hood and put the new one in stock. for that matter, maybe they put the new loader in stock too. does the loader on your machine have any signs of paint on top of grease? what about soot signature?
also, it might not hurt to take the loader/mower off and put them back on, just to see that there aren't any hidden mounting problems that you would prefer to find before you get it home. part of the utility of these machines is the easy mounting/dismounting of attachments... that is another thing you will be paying for over the years, it should be demonstrable, and may help point out other unresolved problems.
btw, you know how paint crinkles and cracks where a piece of flat bar has been bent... right?
on the other hand, maybe the machine was just sitting on a crooked/heaved piece of concrete? it's probably better to assume the best than the worst, that will help put you in a better state of mind for the inspection. if they have no objection to you taking your time inspecting the machine again, that is probably a good sign. maybe there is a legitimate explanation for the issues you have had so far.