Welcome...the best way to gain traction is to add weight to the engine---specifically over the powered wheels. I use egg sinkers purchased at Wal-Mart in 1/4 oz increments and flattened with a hammer. Using 5 minute epoxy, I add it in balanced amounts to the body shell on both sides and above the drive 'til I get traction. Too much and you can smoke the motor, about an ounce is all you should need.