Are you sure that the gasket is shot? I'm thinking that if it was idling for 10 minutes then the exhaust would have got a lot hotter than normal and would be smelling and smoking just because it was burning off extra carbon. The header pipes on these are very thin and actually glow in the dark they get so hot. Check and see if there is a line of black carbon on the head near the gasket (a sign of manifold gasket leaking) and you should be able to hear it leaking too.
Sent from the bottom of ANOTHER empty whiskey bottle.
Chookbanger Mark II,
Street legal Blue Viking, 2017 model, bought 3/4/2017.
Street legal Blue Viking, 2014 model bought 3/4/2014, sold 3/4/2017 with 2850 km and 189 Hrs.
Yamaha Saggy Bottom Club member.
Other Yamaha Bikes Currently Owned
2016 YZ85 (sold)
2017 Grizzly 350 4x2 Auto Quad
Honda 2012 CB250
Honda 1999 CT200
Honda 1985 CT200 Trike