Armatures. One motor gave up the ghost. The other was noisy, the wire through the spring had fallen off the roller, and the springs looked rough.
Called the local guys. Have two new doors, motors, and all new hardware.
Don't get the uber quiet belt driven motor if you have concerns about teens sneaking in or out.
The last spring replacements were many years ago. I think I paid about $100. Came with 10 year warranty