Hello All, I am sorry if this is not in the right group, I am brand new to this forum. I own a 5th generation Makerbot Replicator 2x Experimental. My problem has happened many times even when under warranty. Makerbot just sent me new heads and it would work for a while then the issue returned. so now its not under warranty so im searching for help outside of Makerbot. like I said in the title my print jobs start up fine and at a random point it stops extruding but the head continues to move. I have attached some photos of the filament where the gear has worn in a half circle, have tried many brands of filament, tried adjusting temperatures, nothing on the spool is binding, I am at a loss any help would be greatly appreciated.

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