Hey there UG, so i was fixing up my intonation and everything was going fine until i got to my 3 high strings (G,B,E)

They are as far back on the saddles as they can go yet they are still sharp. This seems weird to me as my 3 lower strings are in perfect tune.

Any ideas on my problem?

also if its of any concern, i play an Ibanez ICX 220, with 46 and 11 strings
Yes, just got them 2 weeks ago, keep in mind my lower strings are in perfect tune :S