Great to hear, Fencer!
I have a 420, and I cut enough of the battery compartment "guts" out to hold a 4-AAA battery holder from Radio Shack that I rewired to take 3 AAA rather than 4.

Another simple test you can do to check your batteries is to hold the camera up to a light and hold your finger over the electric eye. Hold down the shutter button. If your batteries are good, you shouldn't hear the second click until you uncover the electric eye.