some units can go longer without filter changes than others, and the time of the year as well as how often they are used, makes a big difference. what are yours ideas about that subject? visit our conference page for more information. one can be sure their sin will find them out. that way we'd get a better idea of what it looks like and could offer suggestions? >> other partial paths as a leader won't be locked with that. seems to be more common further south. every time i was trying to film he was telling me to stay seated. 