Well, today I got the mod done. HOLY SMOKES it's a success. First off, thanks to those who gave me advice, especially Obi Wan Ke-No-Eye-Deer, Jedi Master of the diy imod. I asked this guy a bunch of ridiculous questions about wires and caps and everything else and he gracefully answered every one. I can be especially irritating because I can't just take instructions like "solder this to that" ... I need to know WHY.
Well done matey, sorry I missed your post, been partying hard.... :)
That's a tidy job, especially as it's your first, well done.
Difficult to tell but the cap leads may be sitting up on the top of adapter's foam pads....
Don't worry about the cap value too much, 4.7uf is more than enough, even if you take into account a low 10K input impedance of the following amp.
Again, cap voltage is not going to factor, you can't buy 'audio grade' caps with a max voltage low enough that will fit in there....
If using TOO high a (uf) value here, is it possible to lower the point too much- enough that you then start to affect the ability of the cap to effectively block DC output voltage? (the whole reason the capacitors are used)
Nope, ALL capacitors will bock DC up to their rating.