I'm about to start Dragonteuthis' Maverick Mod: The Foaminator 3000 and I noticed something peculiar about the Maverick's barrel. The holes at the back of the barrel don't quite match up with the raised half-circle that holds the straws. Here's a real crappy picture on paint of it since I don't have my camera with me.

So, my question is, do you leave the straws in the half-circle and let the foam fill in part of the hole, or do you keep the straws centered on the hole itself?
Thanks for the help.