Originally Posted by ywoodruff5

Ditto what Karennowc said and one more idea. On your Mega there is a bar you can move to the left to slow down the machine. Try that. Also sometimes my Mega is tempermental about the thread I am using. Case in point - I was using the same thread I had done several quilts with and midway through the spool the machine decided it didn't like the thread anymore. Once I changed the spool no problems.