So in the process of putting water to my piping, I found two drips that I didn't find when I had it aired up. They are on either end of a 1-1/4 street elbow, just past the shut off valve coming out of my top storage tank. It would have been the first fitting I put on after I got my tanks in place (using Pro Dope), it might have gotten jiggled around somehow when I added more fittings after that - maybe? Not sure why else it's leaking. I'm pretty sure if I take it all apart, I won't be able to get another turn on either side - and it's going to be your typical serious tight space PITA to get it all back apart to do that. I think about 6 unthreadings & cutting the 1-1/4 copper that goes to my boiler supply & putting another union in. One was a drop every 20 seconds or so, the other every 10 or so. I removed a circ to start the take apart process, then decided to pump it up again (think I've got 15psi on it) & take another look. Still dripping, but at around half the frequency. What's the chances of it stopping on it's own? I haven't heated any water up yet, everything is still cold. I thought I was about ready to do that though.