We have a Craftsman screw drive unit and the minute the weather turns cold, the door only opens a few feet and we need to continually open and close it from the inside switch to finally get it opened completely. Has anyone experienced this problem with the "screw drive" unit and what did you do to correct it.

Does the door open and close freely if you do it by hand? If so, you should be able to turn the force up slightly on the garage door opener. See your owners manual.