I've got a rather cheap guitar who's prior condition I've got no clue on.

I've fixed the truss rod to about the width of a playing card, and I've lowered my bridge saddles all the way down. (Telecaster style bridge) The height from the 12th fret on D,G, and B are about 1/16" but the others are higher. About 1/8" on the low E string. So two real questions.

Is 1/16" height too low? To my knowledge it's rather high...but I'm still very new to guitar.

Is it possible my nut needs to be filed a bit. Like I said, the bridge is all the way down and I'm pretty sure my bow is proper.