I have about 20+ 12" hardscape LED step lights. I have had them a little over a year and so far they have been great. Love the color. However, last night I noticed that one of them doesn't really light up all of the way across the LED light strip, only about an inch or two in the center. The rest of them light up nice and evenly. It got me thinking, how do you fix/replace these type of lights? They are hardscape lights set in mortar underneath capstones so it's not like you can just remove the unit and wire in a new one. Any ideas? Are the LED lights in those step lights replaceable? Not sure I saw replacement ones on the site. Appreciate any help you can provide!