Mark- Did not see any insulating material on the tank. It is supposed to be attached?I think only the California spec bikes had the insulation. I know mine (NY) doesn't have any.
Could try an air freshener to mask the smell, or make you forget about it..
Other than that, check your vent hoses under the tank and verify their clear.
So it's a Pingel for me I guess. Ordered one from Powersport Superstore on Amazon last month but they never shipped it. Very substandard company to do business with BTW--do not recommend.Order a new one from here:
Order a new one from here:
http://www.murphskits.com/catalog/product_info.php?cPath=1_94&products_id=140