My garage door sticks to the track when I press the romote. The track bends (flexes) and the door itself even bows a bit. I've greased EVERYWHERE...the hinges, rollers and especially the track itself. I've use lithium spray grease designed specifically this purpose. It has not helped. I've also adjusted the tension. I've played around with the door settings on the motor box. NOTHING seems to help. Any suggestions???