Sprint gear lever bushes

My Sprint has a vibration up the gear stick in 5th. If I hold the gear lever or move it slightly it goes away. Does anyone know which one of the bushes is most likely to be causing this and how hard are they to replace?

Thanks in advance.

It's probably the cylindrical bush numbered 11 in this picture
http://alfaimola.free.fr/technique/t...nde/index.html sorry about the french text.

It's probably the cylindrical bush numbered 11 in this picture
http://alfaimola.free.fr/technique/t...nde/index.html sorry about the french text.

Thanks eagle3. Is that from a series 3 33 as I think mine looks a little different. Is it possible to change the bush without dropping the exhaust?

If its the same setup as the 33 then it is possible but very awkward. Its much faster and easier to drop the front section of the exhaust. I did mine a while back and it make a big difference to the feel of the gearshift and although the vibrations are still they're not as bad.

Thanks guys.