What are the causes for stripping? I only know about retraction, clogging, and being too close to the bed... but, I leveled the bed each go, turned off retraction, and checked to make sure the filament flowed properly before the print. Is there something else I'm missing..? The printer slowly starts making clicking noises and flat out stops extruding during the raft and there isn't any retraction or travel during the very first layer so I'm completely at a loss now!