hi all,
What i've done so far to drive my metric Sherline mill is to install UC100 + Mach3 on my desktop and then used the XML file for sherline metric off the ftp.machsupport.com/XMLs but when I run test code to cut a simple profile such as a square I get very bad loss of position every cycle:

Anybody able to help me troubleshoot this issue? I'm helpless, and have disassembled the mill a number of times to check backlash and what not...
Regards