THE QUESTION
Other than the stem - what mods would be worth making?
I will ride RAGBRAI with the bike in its current configuration. But after that I'm planning to participate in a lot more club rides, centuries, and so on - and hopefully get to the point where I can feel comfortable doing 20 and 30 mile A pace rides.
Bear in mind - cost is a consideration. So what I'm looking for is - what would give me the best bang-for-the-buck?
Go to Conti Grand Prix 4000 tires in 700x25, and experiment with lower pressures. I'm riding 700x25 Gatorskins, and run 90 psi in the front, 100 psi in the back. I weigh 195 lbs., and haven't had a pinch flat on the crummy roads where I live.