Well i have finally come to the sad end of my search. Really dont know what took me so long to find this but im sure that some people who read this will think im just stating the obvious. On castles website for the mamba motors, there is a chart that says the 6900kv wont power a rusty..(or any other 2WD stadium or SC truck for that matter). The truth is the motor does not produce enough low end torque to get the vehicle up to speed. It has alot of top end speed but heavier truggies and trucks wont have good acceleration off the line. It would work if you were to push the truck forward really fast then pull the throttle. Sooooo lesson learned i guess... i think the biggest motor acceptable in this setup is the 4600KV motor and even then for it to perform smoothly castle reccomends the Mamba Monster or Mamba Monster Pro.. the SV2's capacitors dont have what it takes lol, mine turned black and chared the chip where they were seated in the ESC. I replaced the whole system with a SP short course master ESC and 11.5T brusless combo. Hopefully i have better luck with this system. i guess now atleast i have a high power motor for a future touring car. I'll just need to get an ESC and im set. Hope this helped. In response to the ORIGINAL post in this thread from Mike, LiPO's are probably the easiest...maybe not cheapest, but easiest cure to your cogging as they will supply a steady strong power source for the motor and ESC...