Progressive American Flat Track will finally make its long-awaited return to Castle Rock Race Park for this weekend’s 28th Castle Rock TT in Castle Rock, Washington, on Saturday, August 13.Prior to the eruption of nearby Mt. St. Helens weeks ahead to the scheduled race date in 1980, the event was widely recognized as one of the nation’s most important motorcycle races, regardless of discipline.Since its glory days, the Castle Rock TT has returned to the Progressive AFT calendar for stints in the ‘90s, ‘00s, and ‘10s, connecting its original heroes – riders such as Dick Mann, Mert Lawwill, and Jay Springsteen – with a new generation of stars, including the likes of Chris Carr and Sammy Halbert (No.