Hey ya'll - new here. Just got a '21 TB 6.2. Started with mods and right away have an issue. Mounted running board on driver's side no problem, got to the passenger side and 3 of threaded inserts under truck aren't accepting my bolts. It's not the bolts, went through the motions of removing from drivers side and trying those as well. Anyone ever have an issue like this? Thanks for any help coming...!