Ok had a problem with flat battery checked brown Plug fine checked stator voltage all good but no charge at battery tried new regulator same thing then noticed main charge fuse heating up. I've now sorted this out recharged battery now without engine running get 12.6 volts engine running on idle 13.8 volts by when I speed up engine voltage drops of to 12.6 volts again is this because battery is now fully charged? Just seems strange as lights dim as bike is revIng but charging at tick over any ideas please or is this now normal