Cryptic films

[janeevans]

Can anyone work out the two film titles from these cryptic clues. 1) Change one letter and he would go from winner to loser. 2)Sickness afflicting american soldiers.

[bobbobley]

2 = GI Blues

[greenfingers]

Could the second one be G I Blues. ?

[mindbullets]

2 , could be the champ/chump

[mindbullets]

i meant 1 of course

[Jansy]

A shot in the dark, could No.1 be "King Kong"?

[andys15]

1 - zero to hero, would it be the mask with jim carrey in it??, not sure about number 2, sorry