I am new to mach 3. I compiled a test program using MasterCAM (and supposedly the right post-processor). My 3-axis unit will manually jog in an accurate (real) scale. Meaning - Mach 3 says I moved an inch and I in fact have moved an inch. But when I run G-code it changes the scale drastically. I haven't experimented much with commands and settings. Hopefully I am missing something easy. I would appreciate any help. Thanks in advance.