Hi, sorry for the late reply. It was a busy week.

To answer your questions:
1. Fly High will be finished soon, so we wouldn't change the staff now, there's plenty of other projects we need help for though.
2. A QCer should be able to fix the scans themselves, that's why it's handy if you have some editing experiences already.
3. Having been in a scanlation group before is not the most important thing, if you have previous Photoshop experiences just show us some of your work (avis, siggies, edited pictures, scans etc.) or take the editor test.
Hope all your questions are answered.

I would suggest you to take the editing test.