Hi, we have a old Bridgeport milling machine with a Mach3 control. Since five weeks we have a very heavy problem, I will explain it with the following example: We made a sample rectangular of 2" x 6". The first four cycles the milling machine made them normally, after that she started to move the center on the X axis on the left, after two cycles we have had just a movement of more than 1 mm to the left side. With every cycle she moves center a little bit more to the left. Someone knows this problem and has a solution? Thanks Veit