I got my seio's put this way today, took some work since i can't find the screw that you used.<a href=showthread.php?s=&postid=9193954#post9193954 target=_blank>Originally posted</a> by mpcart
Here's how I have mine mounted.
http://www.reefcentral.com/forums/showthread.php?s=&threadid=525048
-Mike