when I paste something I put the curser where I want it to paste but it always pastes a space or two behind the cursor? Any solutions?

What Mac, OS version and Keynote version?

Is this a wireless keyboard?

try resetting the keyboard as follows:

1. remove the batteries from the keyboard
2. if there is a power switch on the keyboard, gently press the switch several times
3. press a variety of keys for a minimum of 3 minutes [this discharges the capacitors in the keyboard]
4. replace the batteries and turn it on