What is "song and dance in ROM"? Tweak of Micro Tuning maybe? What was date code? what was incompatibility? So where you successful? I have been collecting 5000KS, (4) now. Analyzing mechanism of damage. Mostly G force causes loss of micro tuning. Nothing like cutting your teeth on diamonds.

. PM if you like. Also, I am writhing a white paper on hdd details, internals, and advanced data recovery concepts. Nice to know you share my opinion on 5000KS.