You have the ellipse tires on there right? Yea the bar tires on a dirt track like that so like to slide around. Like you said tire sauce did help but you probably noticed it was still a bit slick? Once you get some heat in them tires, run them more with more sauce and after a few hardcore race days they will soften up and wore down to slicks and you'll notice an improvement in traction. Or what you can do is shave them down to slicks with a drill too. But most companies since hard packed slick dirt is super common these days, Jconcepts have the smoothie 2s which are a good slick. Same thing as the ellipse once it's worn down but smoothies are a slick from the factory.