My turboprop came with a Jetcat 2S 3300 mAh Lipo battery.

I'm having problems when trying to charge it with the balancing option. I have tried three (3) different chargers and they all tell me that there is a problem with the polarity of the balancing lead. Is this a normal occurrence with the Jetcat batteries ? In order to solve the problem is just as easy as to change the wires from one end to the other ? Can this be done easily or do I need to buy a new balancing connector ?