I picked up what appears to be a very early Jim Dunlop Crybaby. It does not have a power jack and, more importantly, appears to have the coveted "stack of dimes" inductor. I'm already planning to convert to true bypass and swap the 68k input resistor with a 47k for more effect volume. I would also like to add a DC jack, but I'll bet it's a bear trying to drill through these things!! Any good mod ideas?