Photoshop Questions

I have two Photoshop questions, maybe some of you guys will know this.

1. Is there a keyboard shortcut to change brush sizes at greater increments. The bracket keys only increase/decrease at set increments. i.e. increments of 10 from sizes 1-100. Sometimes I want to jump from 1 to 100 quicker.

2. When applying multiple gradients to a mask using the gradient tool, how do you make the 2nd gradient just add to the existing one and not make a totally new gradient? Hope this makes sense. I think I've seen it done before but can't figure out how it's done.

Thanks for any help.

Jam it back in, in the dark.

I don't believe there's a way for it to jump.... You could just uh, right click for the dropdown brush menu. It's not that tedious.

As for the gradient question, do you mean like many different colors on one layer? --Maybe I'm interpreting this wrong.

There's nowhere I can't reach.

Well, I figured out a way around my gradient problem. Just in case anyone wanted to know, you just have to change the blend mode of the gradient tool to Darken if you're goin from black to white or Lighten if you're goin from white to black.

This thing is sticky, and I don't like it. I don't appreciate it.