Hi all! We recently bought a second printer, a CR-10S pro, and have had non-stop issues with it. We have it attached to the sonic pad but have made no other upgrades. We have it far more dialed in then we did when we first set it up but the last piece seams to have something to do with extrusion. It blobs at what seams almost at a regular interval. It also has started dropping about 4mm sized balls of what looks like burnt/over heated balls of filament. I have tried different settings for temp, print speed, retraction rate & speed, and flow rate. I can’t seem to find any support info or posts about this specifically. We have only tried printing on it with PLA and have made some upgrades. I took it all apart today and it’s kind of a mess. The video is what it looked like after having heated to about 180 to pull the filament (I forgot to until I had un-mounted everything). We have already changed the nozzle twice.