My honda civic exi 2006 A/C recently found not cooling as chilled as it was before. I further found that A/C restarts late after it trips. I got it serviced from A/C workshop and after cleaning indoor blower, evaporator and gas checking they told me that "bellow" need to be changed for optimium performance. Anybody pls suggest me what is the function of "bellow" and how this effect the cooling of A/C.