Mice in Spark Hull

[flagg]

I just got my spark out from storage and found a mouse nest where the battery would go. Smells like one died inside as well. I haven't taken the top off yet but I can't figure out how they would have gotten into the hull. The only place I can see is the exhaust resonator hole beside the jet but isn't that sealed?

Any ideas?

 

[Table83]

I Would expect they can easily get into the hull through the air intake. They are located in front of the gas tank and connect to the top of the ski. Giant hoses.