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View Full Version : Chamberlain hd920ev help?

NPAlaska
Feb 29, 2012, 09:06 PM
Nice unit but it creeps down about 4 inches after opening fully
tkrussell
Mar 1, 2012, 03:35 AM
Unable to find any reason in the manual:

http://www.chamberlain.com/doityourself/pdfdocs/114A4242.pdf

Give their customer service a call.