Z/1 Classic Sport Sandal

I've worn Chacos for years and have loved my experience with them. I've always bought size 9 and they have fit great throughout the years. I recently purchased a new pair because I've worn my old pair down and was surprised when my foot was hanging over the edge with the new size 9. I ended up returning them (was so disappointed because I was excited to break them in) and exchanged them for a size up, hoping that maybe the size 10 would fit closer to my old size 9. Nope :( They're too big and now I have no other options but to return these too. It's so odd because I heard that y'all hadn't changed sizing but there is 100% a difference in size because I put my old 9 back-to-back with the new pair of 9s and the sole of the new pair was about a half an inch smaller. I am incredibly disappointed because these have been my adventure sandals for years and now I'm at a lost of what to do. Please oh please, whatever changes have been made that have resulted in a different fit and shorter footbed/sole, please revert back to the former manufacturing! I don't want to have to find a new shoe but neither the 9 nor the 10 fit. I appreciate your time and really hope that something can be done so I can wear chacos again someday!