I have had a 1970's ludwig acrolite for a year or so and have not had much success tuning it. Have tried a couple different heads including coated amb, emp, coated controlled sound and aquarian hi energy. Had most luck so far with the hi energy but still cannot get it 100%. I have an old peal steel export 14x5.5 steel snare that I can tune with nearly any head no prob at all. It seems as though with the acro that one lug area just will not cooperate, the note just always seems lower and with funky overtones than around the rest of the head, anyone else have this issue?