Okay. Attempting my first try at subbing S.S. Travel Mugs in mug wraps in the oven. All directions I can find give specs and time for using a convection oven and I don't have one; so have to use the old handy dandy kitchen oven instead. Has anyone tried this using the S.S. Travel Mugs from Johnson Plastics? I'm just trying to get a head start tonight hopefully and not have to wait till tomorrow to call Johnson or Sawgrass.