The DL103's are supposed to sound completely for the better changing the body material on them. Being wood or aluminum they are out there.
I would and have used super glue to attach the 3gram weight that Isokintic sells and is very good. I would not use foam double sided tape because of not having control of the exact equal tightness of the screws. I also am of the thinking to rigid attach the cart to the headshell.
I would not like a piano sounding clangy. Listen carefully.
Pathos Classic One MKII, Clearaudio Emotion CMB Carbon Satisfy Arm, Usher CP6371, iFi Phono, Cinmag stepup, ATOC9/ML II, Dyna 10X5, Marantz SA15 S2 Ltd., all "Silver Series" WyWires.