If the difference between VxA and W were true power you ought to be seeing a gap of at least 40 watts. That would STILL be a PF > 0.9, which would be exceptionally high, without capacitor correction.

As far as additional wiring, if you use twisted AND soldered connections, you can simply splice a piece on. I would not used merely twisted and nutted connections for such a splice. (I assume you know to use rosin flux and not acid flux?).