As it is now winter in the PNW, it is time for a new windshield wiper problem that exceeds my experience/knowledge. Perhaps you can help?

1983 242. Replaced the wiper motor last year in October. Has seemed pretty "normal" since then.

But yesterday I noticed that things are strange:

1. When I press the lever up for long intermittent, I get 3 strokes at the long interval and then the wiper moves as if I pressed the lever down for slow regular speed. This continues until I press the lever down to stop all wiper activity. But it does the same thing when I press the lever up again. Seems consistently repeatable.

2. It used to be that if I just tapped the lever down (but not so far as to turn on slow regular speed, the wiper would do one full stroke up and down and then stop in the down position. Now, the wiper stops as soon as I release the pressure on the lever. This can be mid-stroke, full open, etc.

3. If the wiper is in regular, slow speed and I press the lever up to stop, the blade stops instantly - regardless of where it is in the cycle. It used to always complete the cycle and return to the full down position.

Is this a wiper relay problem? A problem with the lever? Or a motor issue? (Or something else entirely?)

Thanks