Can only answer a couple of these questions..
No - I've never had Tozando hak shrink.
Yes - cut the white stitching out
I wear Tozando as do most people in my association. Only once did I buy a cheaper one from them that I really wasn't that happy about....otherwise I've always been satisfied although occasionally annoyed by import tax into UK.
Thank you for the response! Out of interest have you found their sizing chart matched up for you? Does your height correlate correctly to the size you wear?