AAAARRRRGGGGHHH !!!!!!!!!!Soldering prob.

[Bondonutz]

Ok, I'm a very avid solderer,definitely nothing new for me.
I've tried at various temps and several different solders and 2 different fluxes and I can't get the solder to stick to some clean virgin copper wires coming out of a 540 sized BL motor ????? I've soldered on this motor twice already and had it hooked up and has ben thoroughly used in 2 different trucks, Just decided to shorten the wires a little and solder on some fresh ends for a new install into my buddys Slash. I can't get anything to stick, I even rinsed the exposed wire with brake clean and rubbing alcohol,I also tried soldering with and without fluxes,nothing ?

I guess I'll check radio shack for a different flux ?

Any ideas ?