>. . . out of tune on a few holes . . . . My tuner convermed (sic) this >suspicion . . .
If you square all notes with your tuner, they may not square with your ears. Consult the Harp-L archives or a decent library for the pros and cons of equal temperament (what your tuner will give you) and other possibilities such as just tuning and tunings designed specifically for harps.