I ordered and had mine installed a couple of months back, it was also making rattling noises but in addition during a hard shift it would make slapping/clapping noise i assumed this was due to the design of the shifter but it was annoying so i looked at some youtube vidoes and others CW shifters were not doing that SO i had another mechanic take it out look and he added a rubber bushing, i dont have a pic of what he did but the pic below shows where he added the bushing and its been quiet since...i really think that new design is broken...
https://imgur.com/a/0Cbfnu0