106 Quick Transmission sound

Hello friends, I have a 2000 model 106 m I just bought, a strange buzzing has started to occur. said master gearbox group ball

The same sound happened in my mind, I changed the complete gearbox :) It was not like it was scattered, but when the gearbox oil was hurt, the parts fell on our hands, we opened it completely, there were fractures, the gears, I do not understand it, they said it was a mirror or something, they said that the parts were completely repaired. find

The balls of the groups who have said right from my brother will change will be used without oil so it makes u sound without using oil, and when I put oil after a while, there is no sound from the balls that do not sound when I use it without making a sound. the ball master brought his own, he installed the gearbox myself and put it on 150 tl of workmanship, oil flan kept all 210 tl plus when I removed it I changed the pad to 180 tl.