A couple of things. I consider a mosfet R/R to be a mandatory upgrade. This one from Rick's Motorsports is plug and play . https://ricksmotorsportelectrics.com/Hot-Shot-Triumph-Rectifier-Regulator-10_004H
Second, there is a proper way to set up a Yuasa lead acid battery, you can't just dump the electrolyte solution in, put the battery in bike, take off and expect it to last. The instructions for proper set are here. http://www.atbatt.com/motorcycle-batteries/how-to-fill-and-charge-yuasa-ytx14-bs-motorcycle-battery

2006 865 Neon Blue/Jet Black Speedmaster,790cams, TTP Stage 2 Firestarter, Epco Exhaust with 10.25" Samson Vrod baffles, UNI pods with 40 pilots, 150 mains,Thruxton needles, 3 turns out.