Thank you plzchuckle for your response. Everything I read makes my situation sound very promising. What I still need to learn is how to handle the situation if it gets bad. For you, I'm understanding that your blockage was very tolerable compared to a full blown attack. I also understand from reading other posts that if one felt they were in some trouble with a blockage to go ahead and do a 2nd flush the next day. Did you consider doing that?