It's been 1 week since I got bike back from dealer. They stated the issue was the battery. Only charged for 1 hour's labour so I'm guessing they didn't really look any further than the rear of the bike. Regulator/rectifier, stator, frayed wiring etc could have caused the battery issue but I'll never know. I've put 200ks on it and so far no problems, electrically speaking. However, now when starting from cold it just cranks but won't start no matter how long the starter button is pressed. If I stop, then try again it starts immediately. According to dealer, it had a software update when the new battery was installed and this non-starting glitch is normal. When the bike is warm it starts straight away. It's only when starting the next day this software issue arises. "TRIPLESPEED" started a thread stating the same troubles as me. Soon as he got a software update his bike wouldn't start first time either....
Just yet another annoying problem. I'm looking at trading/selling for something else as soon as I can. The bike itself runs great and it has done for 7800kms. Maybe the new owner who might be mechanically minded will have better luck.