Here's my Squier Vintage Modified Precision Bass V:     The neck is fairly chunky, and though I wouldn't necessarily describe it as divey, it's definitely not perfectly balanced. Each tuner + bushing + screws weighs 93g:     What if they weighed... less? Enter Retrovibe UltraLite tuners! https://retrovibe.co.uk/product/retrovibe-ultralite-bass-tuning-machine-heads-clover-leaf-or-lollipop-only-224g-per-set/     57g each, that's