Bottom radiator hose is leaking

[SWThomas]

When I was doing the trans lines today I notice my bottom radiator hose has a slight leak where it meets the radiator. It must have just started because I'm under my truck a lot and haven't ever noticed it and I never leave any puddles when I park it. I thought that maybe the clamp wasn't positioned right, but that didn't fix it. Then I moved the clamp back a little and added a worm-gear clamp along with it and that helped a little, but it's still leaking. I'm not sure if the hose is leaking or if there's a crack in the radiator itself. I'm going to get to the bottom of it soon. I was just wondering, if I have to replace the hose, how much do they run and where would be the best place to get it? It looks like it would be pretty expensive since it has all the other hoses branched off of it.

Also, I just flushed the radiator a few days ago and can't help but think that maybe has something to do with it leaking. I don't know how, but it didn't leak before I flushed it.