Kibeth
Keeping a piccolo in tune? You have to be kidding.
I hate the piccolo.
Stop being such a Debbie Downer! I love my baby! Especially since it came back from the doctors office. My foster child was a tyrant.
Shall I translate?
My piccolo was in desperate need of a tune-up. So I took it in. My band rental hadn't been played in forever, and it wouldn't play B flat with the normal fingering, and the high F (you know the flicking people off F) was so sharp, i had to use the alternate B flat thumb fingering to bring the pitch down.
You just have to get the piccolo nice and warmed up, and then, sit down with your tuner, and figure out if it goes extreme one way or the other. Then, you FIX IT!
Step 1: FIX!
Step 2: IT!
Step 3. FIX IT!
Step 4: Repeat if necessary.
If you work on pitch, and practice going back and forth between flute and piccolo, you will go far!
That's the best advice I can give.