Dramatic changes playing with resonance control, on the motor pulley and especially on the tonearm (Trans-Fi air bearing). The Koetsu changes character from mellow to aggressive, depending on the application of small fragments of sticky jelly pad, which is sold to tune the sound of drums. Seems that suppressing odd harmonics is the key to clarity plus listenability, while suppressing even harmonics leads to shrill. Anyway, less than a gram required.
Moongel is the name of the product, price $10.
Moongel is the name of the product, price $10.