Aaah, yes, that is the spot that causes my eyes to water too. I have cried buckets over the past almost 3 years.
I am just back from session maybe 95 (with 2 techs working me over) and they only found one hair under my nose. I am now at the stage where there is a celebration if a normal mature hair is found!! At last, after all this time, it seems I am looking at a maintenance schedule only. There actually is light at the end of the tunnel.