Thank you, I will look into libricating the x-axis moving parts.

If the problem is a lack of lubrication, then why did the motor suddenly work when I connected it to the y-axis motor connector? Seems like the problem isn't mechanical but electrical. Not trying to knock your answer, it just seems like the jittering action which only happens when connected to the x axis signal cable means the signal is bad. I guess I could get out my oscilloscope and troubleshoot it but I was hoping one of the many fine experienced 3d printing gurus could help me out here