I have a Klein Rascal (actually, two) with press-in bottom brackets. I replaced bearings a couple of times during the time that it was my main race bike. The first time I paid to have Klein loan my bike shop the tools. The second time I drove the bottom bracket out with a shot-filled hammer, and then set the new bearings with the correct sized socket and love taps from the same hammer. I can't speak for titanium, but the shade-tree solution worked fine for me.