Well I finally got my new speed controller board from Sherline. I connected it back up and everything worked as it should or appeared/s to. I installed the min din and Dc 04 and all seems to work however the speeds requested and speed delivered are 2 different things. If I am in manual mode it appears to turn about 1480rpms. So in pulley configuration under pulley 1 I have set the max as 1480. However when entering M3 S1300 I might see 480. So far the maximum I can achieve is 1100 no matter what I tell it. If I am on the diagnostics screen I see the light blink everytime the mark passes the sensor, when I manually turn the spindle. At speed it is hard to tell if it is seeing each pass but appears to. I have tried using the index and timing as the input with the exact same rpm reading after setting changes. Any ideas? Autocal doesn’t seem to do anything. It does go thru its routine and asks me if I want to save the findings. I select yes, then I select save changes, restart Mach and it is right back where I was. So close and yet so far. No smoke though, everything still works predictably if in manual mode. I have tried with and without spindle speed feedback with no differences.