Fire Mountain Progress

Spent most of the day working on Fire Mountain..I took all the old hand quilting out, replaced the batting with Dream Cotton instead of the poofy wool and started FMQ on the top..its stabilized...and I have started on the leaf vine in the green areas...

much happier with the quilting now..
but..frustrated with the machine..it keeps breaking the Monopoly...

Question...what does it mean when quilting with a FMQ foot when the top thread does not catch and form a stitch with the bottom thread? I have tried adjusting the tension and that seems to help some...fortunately it seems to mostly happen at the start of a line of stitching..