I recently bought a new headshell for your M97xE and it came with a relatively heavy weight (the plate is stamped 12 or 1.2--I can't tell). When, if ever, should this be used? My tonearm is a low-mass aluminum S-tube, and I had the impression that tonearm/headshell mass should be kept as low as possible. Thanks.
Some battle DJ's prefer a heavy head weight to prevent the needle from skipping. For some tips on setting up the head weight, see the following link:
How do I prevent my phono cartridge from skipping?