transmission problem

friends 2001 model 1.6 16v 110 hp 206 have disassembled the gearbox because of the group shaft but it came but still there is a slight sound it is normal if your foot presses the clutch to cut off the sound is not pressed, I would be glad if you help me, this group shaft and balls changed new peugot 206 divide all of them or

there was also in my car when that sound pulled your foot from the clutch to the car was singing to the pressure & nbsp; No click I changed the oil this summer, now I can see that even if I listen very carefully, I will hear it.