[sdiy] EH Bass Microsynth mod

[Toby Paddock]

Sorry if this is borderline off-topic, but...

I had heard that it's fairly easy to mod a Microsynth into a Bass Microsynth. 
I just ran across both schematics at 
http://filters.muziq.be/model/eh/bassmicrosynth

The only difference I see is doubling the values of C8,9,10 in the smoothing 
filter (center of page 1). Does this sound reasonable? Has anyone done it? 
Need recalibration? Is it that much of an improvement? Just tack on some caps 
and see what happens? Don't open it, you'll let the magic out? 

Thanks,
Toby