The main problem is the four small screws have to be undone. I'm sure that after being screwed into the Mazak body, the screws were then snapped or cut off flush. So the bloody things sometimes either snap or pull the thread out. Otherwise they're quite simple to take apart. Ron
They are indeed a sod to remove...I use a rat tailed file to gently file the opposite end to the head flush with the speedo body...A bit of heat doesn't go amiss either before trying to loosen them. The temperatre of boiling water is sufficient...I've drilled and tapped them oversize before after breakages...Ian
