Product review (5 stars): Remove Drum Bolts Before Installing!
This is our second set of LG front load washer and dryer in this model (or the model just prior to this one); had to leave the first set with the condo we sold.  This is a wonderful set, no operational problems and easy to use.  We had the first set for 5 years and loved them so much, we bought this model again for the new residence.  I do want to mention something we learned on this install.  After we installed the washer and did the test run, it banged and shook and hopped across the floor like it was horribly off balance and was going to shake the house down.  We mentioned this to a friend, and he advised us there are several bolts on the back side of the machine that hold the drum in place so it won't get damaged in shipment.  You need to remove these bolts before installing the machine.  We did this and the washer performs perfectly.  Later we found this information in the owner's manual; it wasn't in the install instructions.  Who knew?  Wanted to mention this so you can avoid this problem.  UPDATE:  After we fixed the drum bolt problem and machine working perfectly, I noticed that when the water "shots' release into the tub while it's filling/calculating the load, there is a very loud BAM that sounds like a sledgehammer is hitting the wall.  I didn't recall our first set doing that, but hubby found this neat gizmo called a MINI-RESTER, a water hammer arrester made by a company called Sioux Chief.  It costs about $6 and you install it on the back of the machine where the water hose comes in; you can also install it at the faucet source where the water hose connects.  PRESTO! It totally eliminated the noise!  Now it runs whisper quiet.  This is such a simple solution it makes you wonder why the manufacturer doesn't either engineer that feature into the machine, or at least supply that extra part.