UM3 conniptions

[kfsone 5]

Bought an UM3 couple months ago, and the transition from higher-end hobby printers to a printer I trust ... just amazing.

Earlier this week a print with colofabb nGen went wrong long enough to goop up both print heads with nGen and require me to remove them and clean them off. When I put them back, the bed was out of level and autolevel wasn't helping, so I did the manual level and tried to do the XY calibration but either the print head would be pressed so tightly against the bed that nothing came out or it just wouldn't stick. Using the original UM green, did a cura connect reset, wiped my cura profiles, no help. So I turned all of the levelling knobs a 1/4-1/8th counter-clockwise and now I get prints but the first layer is bumpy and I get elephant's foot and curling, but mostly, part way thru the first player, the print head crosses and catches on something and the print starts to come undone (yes, I have combing and avoidance enabled, I reset to defaults)

I'm wondering if the honeymoon period is over now, and if from here on it will only ever print as well as lower-end/hobby printers I'd had before, or if there is a guide to restoring that factory fresh reliability?

 

Edited April 20 by kfsone