MacBook Pro Disc Drive selectively reading disc!

I know there are many questions almost exactly like this one, but this is slightly different. I have burnt discs that cannot be read by my computer's drive. Though sometimes it reads them like it has no problem, though it has no problem selectively reading other burnt discs.When I go to try to use other things like my audio CD's it works like a charm! After the disc ejects from the drive, it pops out with streaks on it so maybe something stuck inside? Though this can also be an alignment problem because when I rotate my computer so that it sits on its side, it can read any disc just fine.

I have already tried a dvd/cd laser lens cleaner and does not do anything. I have even tried the cloth and card trick that supposedly gets rid of the dust on the lens, but nothing. I have yet to try the compressed gas trick, but I doubt it will work.

I can burn a blank disc just fine too. Odd.

I do not want to replace my disc drive, but if nothing can be done, then I might have to.

Help is greatly appreciated! Thank you!