After reading this thread the question that comes to mind is. Why hasn't someone that had this gas smell start changed the Purge Valve? To me it sounds like it may not be opening or closing properly.
2013 Pure Magnesium Spyder RS-SM5 Cal Sci medium clear windshield, R-35 hard sided saddlebags and fitments rack, 2013 Can-Am Spyder ST Limited Embroidered Stock Seat, Trunk opening spring, fire extinguisher, Passenger backrest and rack, Added side mirrors, Handlebar bag.