Just a thought, how come tippers hasn't had BB problems with his Trek?
Don't Jinx it!
I replaced mine a while before PBP but more so because I wanted to, it would likely have been fine but I was replacing things and did not want to leave that out.
I hear lots of people have issues with Press Fit but I seem to be OK so far on both the Trek and the Croix De Fer (Which has the Hope PF86 like Tom's which seems to be brilliantly engineered in all fairness)
I think you are VERY limited with what you can do with the trek BB90 and from my searching it was difficult to find bearings anywhere that would fit, hence I ended up going for the trek one from the shop. The Headset is the same, I used the Cane Creek fit tool thing and the top bearing was fine but the lower one was wrong and I could not source the right size anywhere but from the shop for the lower one in the end.
Ted, if the bike is not already in the shop I actually have the V2 bearing at home (I bought them by accident from JE James) you could have them if you want them.
It Seem BB90 is Ted's equivalent of my Tubeless!