Nitecore MT1C - Memory mode not working

I just purchased 4 Nicecore MT1C flashlights. The instructions stste that after you select a user mode by clicking the tail cap button half way, it can be saved by pressing the bauuon all the way down, thus saving the mode. Well, itsd not working,. When I turn the light back on, it starts in SOS. I received a mesage fro Nitecore stating the flash light is bad but I have this issue on all 4 of the lights. Does anyone else have this light and can they get it to stay put on the setting that is selected in user mode.

Thx, Wes

I would call it semi memory mode - the thing is after selecting mode you want you have to twist it back to turbo mode ( while switched off ) before using your wanted one again - hope it will help.