I have attempted to print an item three times now. Each time in about the same spot the item moves. And the whole thing is just messed up. it's about a 10-hour print and moves at about the eight hour mark. Can anyone tell me what might be causing this? The first print I used it brim, II print I use the raft, the third print I put glue on the bed. This last print the corners are warped as well and it looks like it raised up off the bed but the first two times it did not do that. What can I do?