I just got my kx3 cnc a couple days ago and was machining some wood to test out some stuff and the 4mm endmill locked up and started coming out of the collet. I am now trying to open the collet and almost broke my wrist trying to turn it open (yes I am pulling in the right direction). Weirdly enough, I was able to push the end mill back up the collet by tapping the bottom softly with a wrench (it was lose enough). But I still can't open the collet. Sprayed some WD40 on it, going to try again in 20 minutes or so. Hoping there are some other suggestions. I am bending the rod that I stick in the spindle for leverage.