Hi, I have created a tapped hole on the surface of the part shown in the attached.  The hole conditions are as follows: 

Type: Tapped hole

Spec.: 1/4-20,

End Condition: Blind

Thread:  Blind (2 * diameter) = .5"

Sketch plane = top of part

Options:  With thread call out. 

I have two questions: 

1) Why does my tap start .25" down in my drawing.  I want the threads cut from the top of the part down.

2) I had to manually insert the text "Tap 1/4-20" to my drawing. This hole text sometimes appears automatically in my drawings, and other times the test does not appear.  Why is this variable?

Thanks