How to join plastic fairing?

I have a Honda hornet 600. The top rear fairing is 3 pieces that I would like to join together into one seamless piece as well as filling in the seatlock keyhole. I'm uncertain as to what material to use. I would think that traditional body filler would be too brittle. It is plastic so it does flex a little. Any ideas?

Honda GX 31 exhaust fumes?

This might seem stupid but I have to ask. Why does my Honda GX31 exhaust smell like an old car's exhaust? I was wondering if it could be running rich but there's no air/fuel mixture screw. I checked the plug color and it is tan with blots of black (dry) on the rim of the plug. I only ask because when it is running I'm chocking on the exhaust fumes which come out clear with no smoke.

Have to drive into bad area?

So I live in New Jersey and I have to drive into this area called Paterson to pick a friend up. If you live in jersey you probably have heard about this place if you do not live in jersey or have heard of this place you can look it up. I need help on what to do to stay safe. One main thing that worries me is I'm a white male and I drive a honda element with a Tennessee license plate cause I uses to live in Tennessee. Please tell me how to safley go about driving through there