Left Front End Clunk HELP!!

[simplx5]

I just replaced the control arms among other front end suspension components on my 4.8is, but I continue to hear the clunking sounds that led me to doing the refresh. I only feel it over bumps and uneven roads and it's only on the left side. My first thought was that it was the strut - that the strut was loose or something because I've felt/heard the same type of clunking sound from other vehicle I've done suspension work on in past. The clunk is driving me nuts as everything else is fine with the car. It sound/feels like something is loose, but my tech confirmed that everything is bolted down to specs. I'm posting here in hopes that someone experienced something similar and can point me in the right direction to identify the problem.