You are so right, just a little thing can make such a difference. 20 years ago when I got my second chair nobody noticed that the foam that was supposed to cover the bottom of the backrest way short by an inch. 10 days later I had an open wound that finally healed but has been an ongoing problem because I have no extra padding on that portion of my spine and it has now formed a large callous which has to be scraped at wound care and we keep padding over it.
Unfortunately, as a quad, we have to be even more aware of our bodies which is awful difficult for us to do. Good luck, and I’m glad you are home. Joan