Laser keeps changing direction when asking to frame

I have installed smoothie board on my k40 but I am having issues. When I setup the machine through the light burn and I crate a sample text exactly in the middle and when I have it framed sometimes the machine send the laser downward from front left and sometimes the machine seems like it wants to go upward and I heard the motors skipping. Please help

I have updated to the latest firmware and I have the bed size 200 y x 300 x

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