Hey Ron! Yep! I've got the answer for you! You need to use a starty/stoppy at the beginning and ending of any kind of chain piecing to keep tension on the thread tails. They are just small scraps of fabric used to start and end a line of stitching. An added benefit is that it saves a lot of thread that is normally cut off at the beginning and ending of a line of stitching, as well as not having to deal with the long tails of thread!
You can see here that I've started sewing on my "starty" then fed first unit through the machine. When you are sewing triangles the machine doesn't eat that leading edge if it's already stitched across the "starty". (I really like Alex's 4-in-1 tool for cutting the thread gaps between the patches!)
At the end of a chain of pieces, I sew off onto a "stoppy" which will then become the starting scrap for the next line of stitching.
BTW...You need to send Keith a note and ask him what he calls them!
OOPS...Teri, I guess we were posting at the same time! Great minds and all that......