I am having problems with the new sizes as well.
I like the old sizing, size S fits my wrist perfectly. It might get a little bit lose during the winter but it fits perfectly during the summer. After the new sizes came out, my SA suggested me to get size T2 as she said that it should be the same size as the old size S. However, I found it feels a little too snug. I am wondering if it will fit better over time? Will it stretch? This is my first KDT in swift, so I don't really know how the leather will change with use. Or should I just exchange it for a size T3. I am not sure if T3 will be too big on my wrist... Any suggestions would be appreciated.