Fuel lines to Carb and Oil injection line- HELP!!!

[Shadowfire]

So, you'll notice that you have two hoses going to the fuel petcock. The one coming out of the BOTTOM of the petcock should be connected to vacuum, which is typically a nipple on the intake manifold between the crankcase and the carburetor. The other line from the petcock is fuel and should be attached to whatever nipple on the carburetor goes to the float shutoff valve.

Also, be advised that when you try and start the bike for the first time after draining the carburetor, it can take up to 30 seconds of cranking for the float bowl to fill up enough to actually start the engine.

The other thing to do is make sure that you have a fuel filter on the fuel line, I didn't see it in any of your pictures. With a 2003 bike, the interior of the fuel tank has likely rusted, and its possible that the petcock's screening has deteriorated and lets rust into the carburetor, which can block passages.