2001 Craftsman GDO 13953976SRT
Opener has worked great until recently. Frequently will not open all the way. Stops at various mid-way points. Closes completely with no issues, just won't open all the way at times. When closing after an incident, entire system shuts off for about 15 seconds and then comes back on. Sometimes light blinks spastically, but not with any specific pattern. Unplugged and replugged, tightened wire connections, checked for obstructions and checked sensors (one green/one yellow). Can't figure out what the GDO is trying to tell me.