could be one of the micro switches, if it bounces or binds on the runners it can stop and reverse, no idea why its only in the morning

Lithium grease the track and rollers

I had a copier making big black blobs over half the page at the right time of day. They moved copier out of the sun and problem was gone. So like dave said. Turn the garage door away from the sun. Or if you are really screwed and hafta leave pull the pin and make it a manual door. When u come back rehook it...

It could be the down force adjustment as it can be very sensitive. If it is the sun, you will need to shield the receiving unit with a piece of cardboard to block all the sunlight to verify that it is the sun, then just reverse the sending and receiving units from one side to the other. You will need to reverse the wiring from them where they attach to the motor unit since the receiving unit acts as a switch. I had a client with the same problem, and my suggestion fixed it. Like most other building products though, the quality and longevity are just not what they used to be. You may just need a new motor unit. It would be cheaper than a service call probably. Good luck.

I never install those annoying little pieces of crap.
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Mine does it every winter (like now in the single digits!), but since you're in West Palm, I'd guess that we have separate, unique issues. ....from multiple perspectives! ha!

Check the level in the drive lube bottle, this could be sending a false reading

You can always do one one of these and just throw those stupid things away

http://www.ebay.com/itm/garage-door-...-/321410487118