Need help - old yang SV 600 atc out of position

[mcs175]

I started a new job last month, and they have an old Yang SV600 VMC that's generally in terrible condition. Ive been working to re-tool it and reprogram it to speed up the abysmal cycle times on the Zamac castings they machine with it. The other day I went to add some new tools in, hit the "rotate mag CW" button, and due to the oil/coolant buildup, the button stuck and it just kept going, and going and going... Had to E-stop it. Now the tool changer's turret is a little more than a full slot out of position. I was able to manually override the pneumatic locking pin and rotate it to get it back into position for T1. But now I cannot figure out the procedure to tell it where it is or what parameter to reset etc. It has an 0M control circa 2000. A good portion of the manuals seem to be missing as well. Any help would be greatly appreciated.