Well the latest problem I ran into with my Fadal 4020HT is a coolant leak at the "Y" ballscrew. I fill the coolant tank with a 50/50 mix and unfroze the pump motor, I plugged the pump motor in and watch the antifreeze level start to go down, when I didn't see any fluid in the return line, I looked around and found it leaking. I was wondering if someone has worked with this type of problem? I have a maintenance pdf that states it could be a "O" ring leaking I have to do a better cleaning around the "Y" ballscrew to see if a line is leaking . On a special note, I have 2 Fadal 4020HT's both with 15 h.p. spindle motors and 1 has a extended "Z" of 28". this is the 1 with a coolant leak. The other machine is now operating after replacing the coolant pump and I will be able to learn the C.N.C. language with it. 1 is a 1994 vintage and 1 is a 1996 vintage. These machine will run in a limited production situation, probably making Hot Rod part's or some other items. Jerry