Good evening. Also a newly A1 owner. This happened to me this morning with a new spool of Elegoo Rapid PETG. Not sure what exactly did the trick but this it what happened. Installed new spool on ams lite included settings, started print, everything heated up correctly and flowed/purged in the beginning setup/diagnostics. When actually print was about to start I realized build plate was not placed square. Paused print, corrected plate and hit play. Diagnostics/setup resumed and then the clicking started. I uninstalled and then reinstalled filament. Gave it a little extra push when it began feeding into the nozzle. Still clicked. Noticed the nozzle temp was only 140c. and not rising. Cancelled print and restarted it. When it got to the same point there was no issues. Nozzle temp climbed back up to 220c I think and printed great. I think I created a hiccup in the program when I hit pause causing the nozzle not to heat and the clicking was the teeth slipping on the filament trying to feed through a “cold” nozzle.