re: How hard is it to replace a section of copper pipe

Quick update and thanks to the OB. I figured out that it wasn't the drain, but to make a long story short, I replaced the drain anyways, and that is when I found the leak on the hot water line. I used the sharkbite and pex to repair that. Worked great. The actual cause of the leak was the old water filter. Two microscopic holes squirting the tiniest streams of water, over to the left, and hitting the drain pipe. Like I mentioned last week, it looked like it was sweating on the top of the old metal pipe. Well, that was actually this little stream of water, more like a mist, hitting the pipe. Either way, I got it all repaired and learned a lot in the process. PEX is awesome.