acelucius,
I think they lowered the age limit. Someone has to confirm. But that only applies to Singaporeans and PRs. It's alright if you are not from the 5 local polys. Doesn't mean you will have less chances.
My advise...play the waiting game. Till you reach 26, send in another application if you don't hear from them. Don't call and bug them everyday. I know they don't like that.