I bought a CZ-21 a couple of years ago when they first came out. It evidently sprung a leak and I've sent it back to Fisher for repairs. So far the service has been great! They said that they will be upgrading my machine to what the current model is like. Now other than losing the LEDs and a change in the faceplate, does anyone know what other changes are likely to be made? I know that they will let me know before they actually start the work, but I'm trying to get a heads up on what will likely be done. Anything new with the electronics? Do they usually have to replace some of the electronics if there was a leak? Thanks.