Would someone like to give tips on tweaking? Have had new machine for 2 weeks.

[printbus]

What size heat bed do you have (consider providing key printer info in your signature space)? FWIW, a few other MakerFarm owners with large heat beds have reported the heat bed flexes as it turns on and off, and this can lead to the print moving up and down as it does so - here's a thread from the MakerFarm subforum: Bed Heater ON = Bad Print. Bed Heater Off = Good Print.

If this is what is happening in your case, suggestions include going to heavier glass (after all, it's the glass that provides strength to the bed - not the heat bed itself), having the binder clips close to the connection between the corner hardware and the glass (so the glass is relatively firmly attached to the heater at the corners), and perhaps having the corner springs fairly compressed (to minimize the chance that corners are moving as the heat bed cycles on and off).

Is this PLA filament in the picture comparing heat bed on/off? Have you tried adding some print cooling airflow?