Hey all - new to the site. We've had a couple customer come in with this concern, now. One just yesterday and one back in March. The one from March has only been back in for an oil change since then. No complaints on the smell. Per our rep, there will end up being a TSB for this.
The two parts that get replaced are:
1035B363 - rocker cover breather hose
7803A005 - premium charcoal cabin filter
Replacement of these two parts along with resealing the cowl = no more smell.
Hopefully this info helps!