Wreck Of The E.F.- He used to say "That'BIG' ship and true was a bone to be chewed", but in the remake he says "That 'BIG' ship and true".
Shadows- "Let me reach out, love and touch you", he changes it to "Would you reach out, love and touch me" (in the GG2 version)
"'AS' the morning stars grow dim" to "'WHEN' the morning stars grow dim"
(I'm surprised no one mentioned Shadows)
I'm Not Supposed To Care- In the original, there's one part toward the end of the song where he repeats the opening phrase, but in the rerecording he leaves it out. (Don't know if this counts as a lyric change)