I couldn't get the adjustment of the headset just right on the Raleigh I have just done up.  To take out the play meant the bearings were too tight.  Initially I put it down to simply having to let all the new bits bed in, but decided this was wrong thinking.  To find the problem I have just stripped out the whole headset assembly which only took a few minutes.  The fault quickly became obvious.  I had installed the lower bearing cage upside down.  Must have been a senior moment.  Anyway, with correct orientation and all reassembled the assembly is perfect.  Also, though not actually an error, I had routed the brake cables to the front of the handlebars.  While the bars were off the bike, and the front brake was removed from the fork, I re-routed them behind the bars where they look better.  Last night I also swapped out the semi sealed bottom bracket for a fully sealed Shimano unit.    I think I can now declare the job's finished and is a good'un.