We have a 1992 HBW0777 opener. Everytime we open it, it always gets stuck after about 3 ft. We have to open/close several times to get it to finally bounce open.
We've checked the springs, re-lubed the rollers, checked the connections on the back of the motor for loose or burned off wires and increased the "up force" on the back of your motor unit near where all those white wires go. Still doesnt open smoothely. Any suggestions?