I've serviced headsets before, and got them apart and back together again just fine. Now I'm trying to fit a brand new one for the very first time, a 1" steel Tange one - and I didn't expect to be so hard. Firstly, the race that goes on the fork crown doesn't fit. I thought positioning an adjustable wrench across the top and whacking that with a hammer would seat it - but this one simply won't fit. Aha, "If necessary, mill the fork crown to fit inside the diameter of the crown race", it says in the instructions. I wasn't expecting to have to do that, and I wonder how long it will take with my hand files. Then the cup and cone that fit the bottom and top of the head tube respectively won't fit either. And again, "The head tube may have to be reamed using a head tube reamer". Oh dear, I don't have one of those, it would probably take about six months to do it by hand with a file, and the Dremel I had years ago got lost in a move somewhere - I might have to get a new one. Finally, the lock washer that goes under the lock nut at the very top has a little protuberance that's presumably intended to fit a notch at the top of the steerer - but the steerer doesn't have a notch, just continuous threading all the way round. It's turning out to be by far the hardest part of building a bike, but I guess we live and learn. Anyone else had similar problems? All suggestions welcome.