Well after pulling all my hair out I finally figured out what my problem was. I have no idea how it got in there but this was inside my pipe.
Funny how once you figure out what the problem is all the symptoms make good sense. I thought all along it seemed like my exhaust couldn't get out, but I blew thru it with my 200 psi compressor and it seemed clear, well today I took the garden hose to it and I finally got it cleared out. This is some kind of synthetic material, I really have no idea what it is, and I can only figure someone put it in the pipe to keep stuff from getting in there when they disassembled the motor. I didn't notice anything when I put it back together.
I bought the bike with the top end off.