NH1 - sample variation (Patreon)

Right now I have 3 representative samples of the NH1, the 4th one seems to be defective as it sounds quite different and makes noises at the right side. 2 of these sound pretty similar to each other, the 3rd one slightly different. Still I hope that the major part should behave like the first 2 samples. I will need to request further ones to really get sure if I need to adjust my tuning for an even better result, or if the variation will be rather big.