I have an Allen datagraph 830 (ad-830gt) that ADSI has just decided to stop supporting. i cant even get a response email with the manual for this thing. Anyway, I have replaced some servo motors and a board in this thing and it runs great but the tracking is off. The O's and dots above i's dont meet properly. I cannot figure out how to adjust this. Anybody out there? We are running Gerber composer software. Thanks.