Doepfer

I find it is necessary to greatly attenuate a VCO output (say the sine wave from a A-111-1) to prevent distortion. I have adjusted the trimmers to get a full range sweep for an ADSR.

Is there an input resistor that could be changed to remove the need for 2 x A-183-1 dual attenuators, or am I thinking about this incorrectly?

Thanks
John