I have figured out how to use the paper.. you have to reset the paper size..
see below: (you set the 8 x 11 to… 7.49” x 11
than it works.. you are correct. .. your paper is exactly 8 1.2 “ x 11 “.. but.. US store bought paper is 8 9/16” x 11.. i don't know why.. but it is..
so.. i think the paper problem is solved.. and i am surprised you have not had this problem in the past..