I was having issues with heat from my 12 gauge wires from the battery and decided to try out a 10 gauge wire to use. I am running a DESC10 and a Losi 8 E, and both draw a lot of amps. I am guessing when you are pushing over 7 lbs you must need a 10 gauge wire off the battery?

No, you need more voltage.

I agree with that, but the rules state 2s on the 4x4 sct. I tried it at speed and it worked very well. The temps came down a lot, so I am satisfied with the results. There is a guy selling 2 feet of 10 gauge, red and black off Ebay, the super worm wire(good stuff,) and for the price I couldn't pass it by. I am very glad I gave it a try.