Having probs with Pohotshop - Clone

Generally I want to get 2 images and clone a section on one image and draw stuff on the other image using the cloned colours.

For some reason whenever I draw a line, it seems to *autoblend*
So If I cloned a white colour and drew a line next to black, it automatically makes that region grey?

What causes this, how can I switch this autoblend off?

thank you

What on earth are you talking about?

autoblend??? check your brush opacity.

I dont know how else to explain it.

I clone white,

Whilst holding down the left mouse button and drawing the line, the colour is the desired white, when I let go, it automatically *blends* the colours with surrounding colours.