Denny Hamlin believes NASCAR’s short-track racing problem could be solved with some help from none other than Dale Earnhardt Jr. moving forward. During the latest episode of his Actions Detrimental podcast, Hamlin proposed the idea of allowing the retired NASCAR legend to test a tire out for NASCAR and Goodyear, and that’ll be the tire that the drivers use in the future. It’s a fascinating idea that’s just crazy enough to work. “I have a solution that I think could fix it. NASCAR has their own Next Gen car. It’s one that they originally started with. Right? You need to get NASCAR and their tea…