Funny, at first I had a heck of a time dialing in my developing to where I wanted it, but getting prints has been a breeze. So I'm not sure what's up. I started right out w/ a decent neg on my first print, made a test strip, saw what I liked from that, and printed it exactly like the strip. I mean, it HAS to match, right?
I guess you'll just have to go through the protocol. Make sure your developer and fixer are fresh, your paper isn't fogged, the safelight is actually safe, the enlarger isn't leaking light like crazy, and your developing temps are close enough. I even bought some filters for my enlarger to fine tune things, but they haven't been necessary. Once I select the correct exposure from the test strip, the print matches that and all is good. I'm wondering if it isn't a paper issue if everything I mentioned checks out? Just switching to a different paper can make a huge difference. When I went from good RC paper to expensive fiber paper, wow. The blacks just took off, and the whites are actually white. Nothing else changed but the paper, and it was a big difference. I always use a hair dryer on the test strip too so that I don't have to deal with dry down values changing. Best to inspect it under a good, strong light.
Having said all that, if you don't have a really good neg to begin with, it just makes things a lot more difficult. So use your best neg and see what comes of it. I don't like to spend a lot of time on a print, so the test strip is really important. Having a good neg and excellent paper means things go much faster and easier. If you don't use a good neg, you'll have to go w/ a test strip and filters. No big deal.