Well, I should have known better. I've been very lax with my cleaning schedule and sure enough, a good hot bath has made all the difference in the world. It still seems odd that a dirty connector would cause that strange firing behavior, but so be it. What I really love about the Grand is that I can literally hold it under a stream of running water to clean it. My question now is, how would I go about getting the same level of cleanliness with a VV Wood, or for that matter a VV Grand? Seems to me that even the VV Grand would not be water safe because of the electronics.