Jeff Burton wants NASCAR to make improvements on the playoff waiver policy after taking its time to allow Kyle Larson compete for a title. While speaking with NBC Sports NASCAR writer Dustin Long, Burton said the organization needs more clarity on the waivers so the Larson situation won’t happen again. “Clearly as long as this took, there was a lot of conversation about whether it should be granted or not,” the NBC NASCAR analyst and former NASCAR driversaid about Larson. “I understand that debate. At the beginning of the year, [Larson] agreed to run every race unless you have an extraordinary…