movement

After I got back from a run yesterday I noticed that my bars had moved. I had them set up in line with the rake of the forks and when I got back to the garage they were ever so slightly out of line. It's not much and there is no movement when I pull on them but over the last few months they have moved about an eighth of an inch. The risers have tapped holes in them so I'll pin the bars and replace the riser bolts. At the moment I've got domed hex bolts and will replace them with hex socket bolts as they will give me more purchase when tightening them up.
I've also decided to take off the springs on the seat and replace them with rubber bosses. This will lower the seat a bit and will reduce the double bounce effect that I'm getting from having both the softail suspension and seat springs. At the weekend I saw a bike which the owner had used rubber door stops which worked perfectly.