There is one something like lencoheaven or something. One more important factor is that...when you set weight the arm has to be perfectly parallel a small angle and you will have a significant different VTF than what think you have.
Also air pressure has a little impact on the sound but still well audible. Keep the pressure as low as possible and you will get the best sound out of it!
Also air pressure has a little impact on the sound but still well audible. Keep the pressure as low as possible and you will get the best sound out of it!