I just printed 3 prints on 20x24" paper in wallpaper trays. Wasn't as hard as I thought it would be, but a couple of inches from one edge of each print, there is an area across the paper a couple of inches wide where I can see faint 'drip' lines. At first glance, I thought it was something in the dark background of the first print, but since it's on all three prints (which are different), I think it's uneven development.

Not totally unexpected from this method, but I'd like to understand where the risky point is during the development. Is it the first few seconds where I "roll" the paper through the 1" of developer in the trough? It's a little difficult getting it to "roll" through until the paper is wet, so I'm thinking there's a point when I first put it in that a little developer is running down the page before I get the paper through? Is that likely the problem?

I'm sure it's a matter of technique, but I'm trying to figure out exactly where my technique failed.

Other than that, they look pretty good actually...