Hey guys I serviced my cvt gearbox at my trusted workshop outside and funny thing happen. First is the cvt oil that come out estimate less than 1litre. After that they replaced around 3 litre of cvt oil . After that funny sound come out when I started slow down after I drive in high speed. The sound I believe come from gearbox and I add the remaining cvt oil back to my cvt. the sound still persist . Any sifu can tell me what to do ?