Yes, they were all retail K90's. All the Tour 90's (PS Tour 90, nCode 90, K90, BLX90) are ALL 17mm because they all come out of the same mold (despite what TW's specs may say). Thus, it's impossible for one to be thicker than the other.Eh? Then it's not the retail k90 or blx ( or modified retail.
If you check Wilson's official specs, you'll see that they are listed as being 17mm, and that's what I've measured.