Any suggestions on how to keep the CFV mouthpiece from getting clogged with ground material as you vape? It gets clogged fairly quickly with normal draws and the only way I've been able to avoid it so far is to put a screen on top of the load (underneath the screw-in 'bowl holder') but that means you have to unscrew the whole thing to stir midway. Any other ideas? Looking forward to details on the CFV trade-in program for Tera. I'll definitely be jumping on that.