i just found a fault in my box. c33 in the vco was 1nf instead of 10nf.
i found this because i changed some of my nichicon polyester caps for polystyrene caps today. i changed c10,c33,c20,c21,c25 and c27. i changed c10 and c33 in the same time and that made a whole lot of difference with my box. i got a new high freq dimension that i wanted to find now for some time and that was my plan with the polystyrene caps. i love it. the overall sound is less transient and more full, wide and soft.
however this makes my former tests a bit useless...
but still, adding a resistor and a cap will get your accents down and get ridd of clicks/pops. im currently using an 82k resistor and a 22nf cap. my xox is actually 1db less hot then my ml303 now and it doesnt make thoose crackling distortions when playing with full resonance , half cutoff and accents.
hope im not making a mess here