This time I decided to upgrade a few more bits as well as all the caps + 2 Audio Note Kaisei and larger battery.
1. I hardwire the 4.4mm with Neotech OCC 7N solid copper 26 AWG This eliminates 2 connections and the thin stranded stock ribbon cable (I stripped baxk the plastic from the stock cable and it's mostly plastic 😅
2. The capacitance of the cap at the battery was doubled from 47uf to 100uf (as well as been higher spec)