You can view #7 and #8 in Skykomish on the Virtual Railfan Camera and see for yourself. As for 27/28, I don't know.
BTW, this morning's #7 had AMTK300 in the lead at 07:47:24 PDT.
Virtual Railfan also has a camera in Chehalis where you can catch the Coast Starlight (also on Youtube).