steve,
here's what i do,
first i look at the center of the page, and then i notice the four corners of the page, i,e the 4 sharp edges of the book, then the imaginary X automatically becomes visible to me. and the words even though i can't read them conciously they appear perfectly clear.
just keep breathing deeply and keep your eyes relaxed i,e(loosen up your control on them)
my advice is to you is that what ever you're doing is correct don't judge or compare if you're doing it right, through time your mind will offer you the various other ways to explore.
your experience with tangerine is pretty interesting, as per my knowledge, tangerine mostly acts like a door way, you walk inside a room through the door, then you forget about the door right?
its the same way.