If you have a "behemoth", are you using the thread cutters on the machine?
If so, when you get a "blob" is that the same as what some of us usually call a "thread nest" (albeit, a little one) ... is it at the start of your next run of sewing after having used the thread cutters on the machine?
If so, I have gotten in the habit of using a little 1" wide piece of jumper fabric to stitch off onto.. and to start stitching from ... instead of using the cutters.
I was watching the Quilt Show (Ricky Tims / Alex Anderson) and she called the little pieces of fabric "starters" and "enders".