Mercman.....I found the source of the ATX fluid leak. As you suspected, it's coming from the vent hose next to the battery. I placed a rag under the hose and it appears to only happen when driven at highway speeds for an extended time (an hour or more)and then it spits out quite a bit (soaked the rag). I checked the fluid level and it is above the full line. I had the tranny flushed and serviced by my dealer this past Oct 03 so it appears they over serviced it. I'm bringing the car back to them on 8/12 to adjust the fluid level and clean everything up. You mentioned a couple other causes other than being too full. What is no TC lock up at highway speeds, line pressure runaway and cooler flow cut off? Also, no CEL, would there be a code for the TC problems you listed?
Thanks Jeff!
