Yesterday's post included a link to a video clip entitled 5 tips. The presenter talked about thread and how it is to be placed on your machine to avoid glitches. It is very informative. Other tips given here are also good. A vertical pin is used for thread stacked on the spool. The thread needs to pull from behind so that it does not hang up on the slit in the spool which can be used to store your thread without it unwinding in the drawer. However, many brands of thread now use the double top so the thread slides between them to keep from unraveling. For cross wound thread I used a horizontal pin and securing cap or I use a thread stand for large cones. Rarely do I have a problem and I use a large variety of thread. My Bernina just likes thread.