I've mentioned before that I have an azumi flute, and recently I've noticed its been playing incredibly sharp no mater how much I pull the head joint out. The headjoint cork is in place correctly, though it is old it does seal. I know I have some minor mechanical problems on my flute so I was wondering if these could be what is making it sound so sharp.

When you say it's playing sharp, are you using a tuner?
If you have issues with the keys opening too high or if they aren't closing properly then you may get a sharper intonation but that isn't necessarily a 'general' issue and if the keys aren't closing then you won't be getting a good tone on your notes.
Another thing is that when the air temperature is warmer then wind instruments will tend to play a bit sharper.

Also, have you checked on your model/brand as there are instruments today that are designed to play above standard US tuning of A=440.
I have a few import flutes and because their intonation is like A=442, I have to pull the head out about twice as far as an A=440 flute.
If you can't find that intonation online then try asking the company http://www.azumiflutes.com/feature/altus-bennett-scal/

Yes I am using a tuner. I believe my flute is an a=442. I looked at the keys and they don't seem higher than normal but I'm not 100% sure. I was going to send it to flute world in the next month for a general adjustment in preparation for college auditions.

Sorry, one more dumb question. Since your flute is 442, have you confirmed the tuner is set to 442, and not 440?

If you are trying to tune to A=440 with that flute then you can only accomplish that with pulling the head out a bit more that you'd think looks right.
The problem that you should be aware of is that the more you move the head section from it's design location then the more the flute scale will distort.
So, you can also roll back some and / or place the emb. plate lower on your chin.
Another issue is that when the air inside of the tube is warmer then the intonation will rise even higher.