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Wild thumper 6wd with WTC

Ok so two questions today. I built my 6wd wild thumper with the wild thumper controller. Controlling it via rc tx futaba 7c 2.4ghz. It drives pretty great but it drifts a bit to the right when I push forward on the stick. When I have the WT up on my stand and I very slowly move my stick forward to the point of first wheel movement, the left wheels begin turning before the right. Does anyone know and troubleshooting steps I could follow to remedy this?