Liftmaster Opener Lifting door when it's within 1' of closing.

This just started a day or two ago.

When the door is closing and gets too within about a foot, it reverses course and opens all the way.

The sensors are new and they are not flashing as if to suggest something is obstructing the path.
One of them is solid green with the other being amber, as I was led to believe this is correct.

I called a "pro" out that after about 10 minutes of looking, suggested lubing rollers, then replacing rollers and springs to even a new door. Seemed a bit much. 

Hoping to get some ideas to check on myself, as I am pretty handy and can figure my way around most things, if I know where to start.

TIA