Xikar Cutter cleaning tips?

[Tenor CS]

On another note, I have used several Xikar cutters. I myself have 2 Xi2's, one in grey, one in red. I find that the Xi2's seem to be made more cheaply than the ones with wood or metal handles. Catfish has a Xi3 in the cool "spectra" (shimmery purple metal) finish. You can tell when you hold it that it's a solidly engineered piece of work. My Xi2's definitely feel more flimsy. There seems to be more play or wiggle room on the Xi2's. That might account for debris collecting in it, or it feeling "sluggish."