I have an Ikegai FT20-U. The turret will unlock and start turning, btu it won't lock down where it's supposed to. Sometimes it'll just keep going around, and other times it will slow down like it's going to lock down but it'll just slowly go past the tool. I have only had this machine a few days, and it seemed like it locked down slow all along, but this is my first turning center so I don't really know if it was working properly or not. The manual says to check the adjustment of the proximity switch. I didn't really have much time to look around for the switch, the manual doesn't show where the switch is located either. Can anybody tell me where to fine it? Could it be the encoder? How do you check it?