More specifically, hanging up on the stud on the left side of the ruler that marks the typing line. The stud is actually a rivet that allows the left hand card holder to pivot down and out of the way.

This seems to be for me a chronic problem. It only happens 1) on the Red setting and 2) when the ribbon is moving from the left spool to the right (so there is some slack in the ribbon as it moves toward the type guide).

This has happened most recently for me with a Model P, but it's cropped up with other portables. Any surefire fixes that the group might have? I realize it may simply be trial and error by forming the ribbon guide, but maybe there is another way. (I know, if I just leave the machine on the Blue setting that will address it, but still....)