Automatic tempo changes in Garageband

Hey guys, Im having some trouble with Garageband.

Here is the deal. I need a tempo change at certain point of the song. I know how to do this, what I dont know is how to set the exact bpms that I need. I mean, I need the tempo to go from 85 to 82. But those freaking dots are not precise enough!!

I don't know if you know what I mean...here are some screenshot:






I just can't get the tempo to 84, 85, 86 and so on. Any other method to do this?

Click on the node (Dots), and hold down the shift key and drag away!

That solved it. Thanks a lot