questions about KFX80 exhaust, oil leak, and hesitation

[Ensign]

My brother just got his son a 2006 KFX80 for Christmas.

[list=1][*]Where the exhaust mounts up to the engine, it looks like there is only one bolt stud and then a screw. Looking at the parts diagrams, I only see one bolt. Is one of these mounts really just a screw?[*]There seems to be some oil leaking even when the bike is just sitting still. There's also some oil that seems to drip out of the back of the exhaust. I know some oil coming out is normal for two strokes, but should we see anything under the bike?[*]There's some hesitation when riding the bike. Other than cleaning the carb, draining old gas, and changing the plug, anything else we should look out for?[/list=1]

Thanks for your help!

[LT80]

The pipe mounts to the cylinder with 2 bolts/nuts. Yes it leaks oil out there.
The bog is the famous "LT80 bog" LOL

Keep the air filter clean and run it!!