Topic: need to update or calibrate MP mini?
I installed an E3D hot end on my Monoprice Mini select V1. I printed one very nice pla print and one nice petg print. However the next petg print had some underextrusion. The next pla print was entirely looking like underextrusion. I removed the nozzle and found it a touch loose but without leaking. Cleared the nozzle and next pla was half excellent (bottom) and half holes (top). Tried from 195C to 215C with identical results. The temp display is showing its within a degree or two of target when I look. So Im a bit stuck. I don't think its retraction settings cause it doesn't do it on the whole print. So its led me to consider needing to tune the pid
or update firmware. Any advice or experience with my situation?