help please dynamo pulley

hello my & nbsp; 307 1.6 hdi & nbsp; arcac now I have changed the 90 thousandth timing in the 90th thousand. In terms of 90 thousand years ago, especially in the morning, there was an irregular clicking sound from the cold engine, and there was a noise in the idle that I felt especially in the idle. They gave a price of 1300 TL. The so-called heat shield part They also said that they had to change their feet and that they should change. Now what I do not understand is that did they think that it is normal to wear the belts tightly when the timing is changing? can you suggest a place i know? Thanks to everyone in advance for your help.