Vintage Synth Repair

In comparing my Moog Prodigy and my Arp, I like the response of the 
Arp's LFO better. Not really because the control is on a slider, it 
just feels like it gradually gets into the modulation more naturally. 
The Moog doesn't have that natural feel. I'm also not sure if the LFO 
pot in the Moog is original.

So, does the Arp use a logarithmic pot, and the Moog use linear? 
That's really exactly how it feels. If this is the case, can't I make 
the Moog pot logarithmic by bridging the center and first (or third) 
lug with a resistor?

Thanks,
-Mike Walters
www.mysterycircuits.com