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It could be that. I noticed some other prints starting to "pop" off the bed after about 20min or so. Up until now things have been printing awesome. (I just built the machine three weeks ago and have probably printed for 15 hours total). I'm assuming its good practice to clean off the glue from the glue-stick after a few prints? The adhesion problem just started.

PLA - 210
Heated Bed - 70
Auto leveler

no rafts or rims (seems like cura is not great at that)