This may sound silly, but today I was trying to oil my valves for the first time. I read up on it, and tried doing what they suggested. I started with the second valve, and screwed it back in. It was fine until I pressed it back in. Now it sounds like the spring is scratchign against the side. I decided to ignore it and moved onto the third valve. I oiled it, but when i went to screw it back in it got stuck halfway. Now I can't unscrew it out, or screw it back in. Can anyone help me?

I would take out all of the valves and make sure that nothing is broken first of all. If nothing is put the valves in the designated casings and before screwing the valve in completely, twist the valve stems to the right until they click. Then screw in completely.
If this doesn't solve your problem you can email for some more suggestions at uhhhno@msn.com. Hope this helps

Oh sorry for the double post but I just realized you said you can't get the valves out. If that's the case you might as well just bring it into a shop and have someone do it for you to avoid breaking anything.