The extra struts plant the tires harder from weight transfer through the seat. Whoever told you different is wrong. Numerous karts in low hp settings do not run seat stays or remove them as grip levels increase at national events from increased rubber on the track. My statements are not opinions or things I was told by someone. I’m not fast by accident and neither are the people that have me work for them at national events. Im here to help not spend time debating. I can promise you if you follow all the steps I mentioned your problem will get solved. Plain and simple.