I did the fuzzy mirror mod years ago... wouldn't go back...but my bike is still on original bars.
PieEater put together an extremely thorough and helpful FAQ regarding Gen 1's at the top of this section. Chain adjustment is covered in that thread .
@Falcon 269Had another quick nose around after work today, the sound is definitely on the right hand side, where you have suggested......will have a gander about on here and in the Haynes manual and familiarise my self with the area No smoke this time...........though will have a lengthly look and record on saturday, when I have an extended time with natural light.