Ross Chastain was tracking towards a much-needed top-10 finish in Monday’s FireKeepers Casino 400 at Michigan before a late caution changed everything. Martin Truex Jr. tagged the wall in Turn 4 with six laps remaining, forcing an overtime finish. On the backstretch of the ensuing restart, Alex Bowman brushed the wall, causing multiple cars to make brief contact. Unfortunately for Chastain, his No. 1 Busch Light Peach Chevrolet got loose and went for a slide. Instead of picking up his second consecutive top-10, Chastain finished a disappointing 25th. Chastain, though wearing his signature Busc…