Carving issue - motor not working 100%?

Using a GShield and having bit of a weird carving issue. Tried sending file using GRBLcontrol, candle and Universal GCode Sender- all have the same issue.

Heres my file loaded up in grblcontrol:

Here’s what it carves:

Note the screwed up letter spacing and errors on the K

Any ideas? I’m assuming one of the motors/something on the GShield is fried?

could be anything from a loose pulley to fried gshield.

You should watch the machine in action very closely to zoom in on the problem. Is the X motor turning?
Not much we can do with only a picture to go on.