I have a brick patio with two small brick walls (approx 2.5 feet) marking two of the corners. The walls have a small lip, and I would like to mount a couple step lights under them. Anyone with fixture & tips for a retro job? I have no way to mount the plate that I've seen attached to this type of fixture. All I want is a nice, narrow fixture. I know Unique has a new one, but I don't see it on the website.