Well did the test with my X1T-F with the AD360mki. X1T-F works flawlessly except no TTL or HSS on the AD360 mki. It doesnt trigger flash above 1/250 so there goes any chance of HSS. Unless I have missed a setting! I dont have a PC cord socket on my XT16 or XF16 units so couldnt test that. I also tried with XT-16 in the hotshoe of the X1T-F and same results. I cant believe that there is no solution to this. BTW: I know that TT350-F, AD600BM, AD200 and many other Godox flashes manage to provide HSS with the Fuji cameras. So please dont post about these. I know that others are having this problem as well so it is not me alone. Please post if you have a solution. I have seen a solution where an addition XT-16 has a connection to the camera PC sync socket but my XT16 has no socket for this cable. I would modify if I knew it worked and also if I had the pinout details.