Yep That's the Caswell mod. Just did one of the mods so far. made a big diff in the way it sprayed. Follow the link for a short video after the mod, spraying. The cloud is the part that was improved on. The drilled holes is to only mad I made so far. Wanted to see how that effected it before I do any others.
http://s80.photobucket.com/albums/j1...t=100_0201.flv