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Attempted to print. Got the maze part done (bottom). It worked great. Nice print, first time. However, I'm having trouble printing the lid part. I've tried three times and each time it starts to do the "unraveling" spider web thing about a third of the way through the job. I have not been able to get a successful print yet of the lid. I'm using a MakerBot Replicator 2 that's about a year old and standard PLA. Is anyone lese having this issue? Thanks in advance.