Solved! Dolphin XP007 can't Remove Back and Forth

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Question:
Dolphin XP007 couldn't move back and forth and it could only rotate.


How to Solve:
1.Turn XP007 around, and check if something is stuck at the bottom and remove it.

2.Adjust the 2 screws and move the machine back and forth.
When it moves smoothly, fix the 8 screws marked


3.Slightly loosen the 2 screws

Then XP007 Machine should move and work fine.