I hope it's clearly better than the Max. The Max is a good amp, but I prefer my B22 so hope that the Aikido can be on roughly the same level (I've heard a full voltage non-hybrid aikido headphone amp before, and it was killer).
Thanks for the info on the DC offset
About the cap in the C4 position...I was planning on using an Elna Silmic II there, but perhaps I'll purchase some FM's as well, to test. I do plan to bypass C3 with a polystyrne (Multicap RTX), but are you saying that C3 itself should be polystyrene?
-edit- forgot to ask, in C11 the lead-spacing is 10mm, correct?