https://youtu.be/XJTbiqtvzFUOk so you will have to bear with me, I new at this CNC stuff, I bought a used home built table.

software: Mach3, sheet cam, corel draw x7 home and student.....
hardware: I believe that they are gecko's, PMDX board THC300, linear rails.....4x4, windows XP

the main problem is that the gantry gets way out of sink on long runs down the table, not always but 80% of the time it does.... if I reference home the gantry takes off faster on one side then the other(Y and y slave).

sometimes cutting larger circles it might be out by .100-.125" then other times bang on.

I have a small video of it, will try to get it loaded some how..

sorry if I missed some info, just ask me for more and I'm sure I might be able to get it, I would really like to fix this, its getting old fast and lots of scrap

Thx Railmen.