Trying to calibrate issue

[diceman]

I'm a new owner of a Flashforge Creator X Dual head, and I'm working on calibrating the print heads. I am currently working on the left head, and this is my first test print after some initial tweaks. I'm not sure what is causing this issue. I am testing this with Hatchbox transparent red PLA, printing at 210C.

If you can see the edge, it looks like it has uneven starting/stopping. What would be causing this?

Jon