I am having trouble printing the triceratops sample. After playing with the first layer calibration tool, I've been able to print the flat Prusa logo ok. When I print the triceratops, the first layer seems to go down, but then the second layer doesn't stick to it, and eventually gets tangled up on the extruder. I've tried adjusting the extruder idler tension and the 1st layer z offset, but it doesn't seem to help. Any ideas on what I have calibrated wrong? This is with the z-offset from the first layer calibration tool set to .925. I also tried .940 but then the first layer curled up at the edges instead of laying flat.
Big John, named after the owner of the land where it was found, is certified by the Guinness World Records as the largest documented skeleton of a triceratops. The dinosaur died in an ancient flood plain on the island continent stretching from present-day Alaska to Mexico, allowing the conservation of its skeleton in mud.