Ok, took it for a real ride today - 40 miles.

"Twitchiness" is already basically non-existent.

Butt is learning the new seat.

Body is getting used to the new position. Good variety of hand positions helps greatly.

Overall, it keeps getting better, with one snafu. I had just crested a hill on the small ring and as I went back to the big one, holding the lever until it "seemed" to be engaged. However, when I let go, not only did it skip back to the small ring, it jumped completely off and jammed between the ring and frame.

For a while I thought I was going to have to call my wife to come get me, but I eventually figured out the sequence of things I had to do to get it out.

That's not the worst of it. Apparently as the chain came off it dug into the frame and gashed the CF. It doesn't look "too bad", i.e. going to fall apart, except that it's a brand new bike! Only 20-25 miles on it when this happened. If this happens with any regularity the frame will certainly become structurally compromised.

I will be taking the bike to the LBS in the next few days to get my SPD pedals put on and pick up my shoes and will talk to them about this. But before I do I'd like to be better prepared.

• Is this entirely my fault for not holding the lever long enough? I was told that you have to hold the lever "a bit", but was never warned that not doing so could cause the chain to jump off and cause damage to the frame.
• Was something not installed or adjusted correctly?
• How likely is it that Trek will cover this under warranty?
• Anything I've missed?