Had a similar problem w/ my 2003 this spring after I bought it. Take off the fairing and remove the inside parts. When you can clearly access the cracks, take a dremel tool and remove a bit of the ABS behind the cracks, so when you will em, they'll fill pretty flush with the rest of the surface. Then you wanna cover the painted side with some duct, or very adhesive masking tape (to keep the filler from bleeding through). Clean up your grinding real well w/ plastic cement (pipe) cleaner on a rag. When it dries, mix up and fill the backside of the cracks w/ 2 part epoxy that's specific to ABS plastic. I applied mine w/ an old credit card. It's still holding well after 3,000 miles.