Maxon CS-01 Chorus - Increase volume??

[sixstringphil]

Looking at a Maxon CS-01 for a friend. Good sounding chorus, but need to increase the volume when effect is on. Can't find any info about this online. Anyone familiar with this pedal, or know what circuit it might be based on? Circuit board is PCB-CS1-0101B. There are three 4558s, a MN3207, a MN3102, and two internal trimmers labled "bias" and "clock". I've never build/worked on a chorus, so I don't know much about how the circuit should work. I know this is a long shot, but any ideas where to start?

[sixstringphil]

I'm wondering if this is not based on the Ibanez CS9. Many of the values seem to line up. I linked to the CS9 schematic below. IF it was a CS9 and I wanted to increase the effect volume, would adjusting the input resistor (R101) be a good start? Or should I try to work closer to the delay chip?

http://www.freeinfosociety.com/electronics/schemview.php?id=2292