Thank you for your help a few weeks ago. I had the leak at the tailpiece fitting and couldn't get it to stop leaking. As you suggested, I replaced the flapper valve along with a new tailpiece. Turns out the old tailpiece was cracked and the flapper valve looked a little distorted.. so I had ordered both parts from Wilcox-Cr. which they shipped immediately and in a few minutes... I was flushing! No leaks. Thanks!