4200 slip ring removal and brushless upgrade

[61pete]

I just purchased a 4200 excavator. I hardly had any run time on it and the ESCs and drive motors have already burned up. I purchased the rc4wd brushless upgrade kit for a replacement. So far I have the machine mostly pulled apart but I am stuck at the slip ring. How do I get it out? Also, how do I wire up the brushless ESCs? The wiring block does not seem to accommodate this upgrade. Any help is greatly appreciated!