Hi Petra thanks for your info. yep I have been watchin that lower left side and my though was that it being a much hotter area of discharge could it not "destalablize" or undermine that side? since the main throat is plugged and as pressure builds could this be a pop off valve for now? or become a new main throat?? I still think that POPO will go off big time and act as a trigger for Mammoth and Eureka Guess time will tell Lots of signs going on at Mammoth! thanks Scorpio