Lockbacks tend to stay closed with a little more gusto than liners and such, I think this is a good thing. The Titanium is a little tight even for a lockback, but as you break it in it gets a lot easier. The best way to break it in is to open and close it a lot. This works out pretty good, since by the time you've gotten it broken in, you've got in a lot of practice opening it.
Yeah, you also have to get used to the feel of a new knife(if you used the old one a lot), it's like getting a new haircut, jsut doesn't feel right till you've had it a while. When I traded up to the Titanium from the Ranger I was packing, it took a good while to get adjusted to the longer, lighter, and thinner knife. That that I'm used to it, it feels pretty good.