I have a Maho that paid for itself in 3 months and has been a money maker ever since. Unfortunately it has been warning me that the gravy train may soon come to an end. The feed on the vertical axis has gone from a smooth continuous motion to incremental jolts with the ball screw coming to a complete stop before making the next move. Has anyone experienced anything similar and if so, what was the root cause? ( I suspect it is the Indramat driver but I'm hoping it isn't !) I'd appreciate any insight as it has now started to shut down due to the following error. Thanks!