Hello,
I recently noticed that when my garage door would open it wouldn't go all the way back but I could still easily pull my car into the garage so I didn't try to solve the problem. Then just a couple of days ago the garage door will now open all the way but when it closes it stops about 3 feet short. It's a Wayne Dalton brand, model BDOR-2000/BIRW-2000.

Thanks for your help!

This should help:
http://www.wayne-dalton.com/Files/ProductManuals/Residential_Garage_Door_Openers/DoorMaster/300640%20P4%207-9-2007.pdf
I noticed you asked on another site, they said it had to be done by a tech. That was an easy answer.
Any problems programming, come back. Good Luck

Your first problem is you bought a Wayne-Dalton door. They are the P.O.S. of the garage door industry.
Call anyone you can find on the internet or the yellow pages that does not say they are a W-D dealer. They should set you on the right direction. (Look for someone local, without a whole bunch of phone numbers.)
I am sorry to be the bearer of bad news. I hope you find a solution to your problem.

Garage Door King of Chicago