So today, I had to stop a program in the middle of it. It was a proven program, I just had the workpiece come loose. I hit slide hold, then manual to exit the program. I then hit jog, and began to jog the Z axis up. It got around half way up before there was a loud clunk and it stopped. It was the sound it makes when it hits a limit. I can't remember the error that came up. It would not let me do anything at all. I had to kill the power to the machine. I waited, the powered it back on. It was stuck on the Fadal screen when I powered it back up. I restarted it again, then jogged it to the cold start position and did a cold start. I typed TC,1 to put the tool away to put the tool away. The toolchanger(carousel style) slammed into the spindle as the Z axis was .99 or so down. Any ideas what could be going on and how to fix it? Thanks!