For the few years that I've been on this site, bindings and how to adjust comes up on occasion and you get a few different responses.
1. Go do it yourself no problems, here's the info required.
2. Get all the testing tools and spend up to several $1000 dollars for the tools.
3. Let the pros do it only.
4. Learn and understand the risks, before doing your own let alone someone else's and get pro assistance when required.
My personal opinion is in the following order:
1. If you got to ask get a pro (or at least seek their assistance even if it costs you).
2. I am now more hesitant depending on what is ask, in pointing on where to get the information as I agree based on some of the questions, those asking aren't ready and should seek a pro. If you understand the hint that the information is there you can find it with a bit of searching, you have likely advanced your education and may now be somewhat ready to do some of the work.
3. Finally, if you know the risks and are will to take them, along with you know what you are doing go for it (I do regularly, my own and family), BUT you also have to know when to get someone else (pro) to do the work (even for family). I don't have the torque tool at this point so the shop checks it when I need them checked.
Pro's can make mistakes, so when they work on my equipment, I check and know what to look for, it's my legs and knees that suffer if a mistake is made (no offense to the Pro's here). Fairly though, most times they do the right job and must follow rules (that are caused by the legal system and blame being laid on everyone but the fool who caused the problem in the first place) whether we like them or not.
The easy answer is use common sense, but as the saying goes, common sense is not as common as one would expect.
@ the OP, you mess up the bindings for your wife, remember you have to deal with the repercussions and she knows where you live and has keys to the door .