Vintage Synth Repair

Has anyone ever tried this mod?:
http://www.physicsenterprises.andrews.edu/diy_archive/manuals/moog/pro
digy/prodmod.txt

I'm about to perform it on my Prodigy. Seems cool. From the 
description, I assume it puts the VCF on the same frequency of osc 2?

"4. Connect center pin of 50k FM pot to "VCF In" on circuit board. 
(At R144)"

Which side of R144 should I wire?

Man, it was a bitch taking those knobs off the pots. The little 
springs inside looked alittle rusty.

-Mike Walters
www.mysterycircuits.com

I tried the mod lastnite with alligator clips. It seems the 
schematics on that site don't match up with my Prodigy's. For example 
R74 on my board is a fixed resistor. From what I'm reading, I think 
the R74 they're talking about is the Osc 2 level pot. That's a 
totally different number on mine. Anyway, my main question is this... 
on the schematic, it says to wire the center FM pot to "VCF In" R144. 
Since it's not R144, where would VCF In be?

Here it is:
http://www.physicsenterprises.andrews.edu/diy_archive/manuals/moog/pro
digy/prodmod.txt


Moog Prodigy FM Mod.

This mod can be applied in moderation to brighten the typical Moog 
bass sound or 
in excess to create wild metalic sounds. When Osc sync is 
engaged...watch out!! 

Parts: 
3  20-22awg wires
1  50k log pot

Procedure:
1. Drill hole in control surface that will accept the 50k pot. (Below 
filter section is fine)
2. Connect hot side (cw pin) of R74  (Osc2 level pot) to hot side of 
50k FM pot.
3. Connect ground side of R74 to low side (ccw pin) of 50k FMpot. 
(The new pot is simply parallel with R74)
4. Connect center pin of 50k FM pot to "VCF In" on circuit board. (At 
R144)
5. Mount new pot in control surface.
6. Enjoy!


                         hot
                          |---------------------|
                          |                     | 
                          /                     /
                          \                     \
                    ---- >/                     /<----------- To "VCF 
In" R144
                          \                     \
                          /                     /
                          |                     |
                          |_____________________|
                         Gnd

                         R74                 FM Mod
                     Osc2 Level