[sdiy] 909 attack mod

[gregory zifcak]

hi, i'm trying to increase the range of a 909 BD attack control (varies the 
level of a click sound). i expected to find that the attack pot was just a 
grounded attenuator in line with a resistor, but that's not the case:

http://hardware.freepage.de/raf909/

i'm not familiar with the configuration of the pot (vr3). how can i increase 
the maximum level of the attack sound? what sets the level of VCA q6?

thanks for any suggestions,
greg