BOSS CS-3 MOD to Lower MIN Compression

[codamedia]

My CS-3 is used in a very subtle manner and overall I am quite happy with what I get out of it. However with loud output guitars, even at the lowest compression setting it still slams down too hard on the signal.
Does anybody know of any mod that will make this thing compress less, particularly at it's lowest "sustain" levels?

I understand how compressors work so I am thinking there are two ways to approach this.

1: A mod to adjust the input level. This would have to be done after the initial buffer stage, possibly even beyond the switching stage so it does not affect the guitar in a negative manner. I am hoping there is a simple resistor value that could alter this, and/or even replace a resistor with an internal Micro Pot - but I am not sure it would be this simple.  (I believe the Keeley and possibly others have an internal TRIM pot that does this)

2: A mod to raise the minimum threshold (ie: lower the MIN setting on Sustain). Based on the schematics I have seen of a CS-3, I believe this might be possible by altering R3 (22K) and R4 (4.7K) from the daughter board (ie: the board for the controls, not the main board). These resistors are connected to the outer legs of the SUSTAIN control and my "assumption" is that they control the Minimum and Maximum settings for SUSTAIN. I admit- I could be completely out to lunch on my assumption, but that's why I am here, and not blindly attempting changes

For the record ...
1: My compressor is the first pedal my guitar see's.
2: With stock tele pickups, I run the SUSTAIN around 9:00, with my strats (which have lower output than my tele) I run the SUSTAIN around 10:00.
3: My Les Paul and my Partscaster with Seymour Duncan P-Rails squash far too much, even with the Sustain at it's lowest setting of 7:00.

Any suggestions would be appreciated.

[codamedia]

After reviewing the post below, I decided to try adjusting the value of R4 (in minor increments) to see what would happen.
http://www.diystompboxes.com/smfforum/index.php?topic=95701.0

Well - that appears to address the problem I was having.

When I removed R4 I did a measurement to find it was reading about 6.6K. That's a fair bit higher than the 4.7K that resistor should have been and outside of any acceptable tolerance. The resistor certainly appeared to be stock, so that leads to even more confusion I put in a 4.7 and it began squashing even more. Some schematics say a 3.3K can be found there, so I grabbed a 3.3K and a 10K so I could hear the extreme ends of the spectrum.

3.3K was very squashed at it's lowest settings. Even the Tele was triggering compression.

10K was more what I had hoped for. At it's lowest setting I cannot feel or hear any compression with my Les Paul. I need to get it around 8:00 to begin feeling it and 9 to begin hearing it. The tele I had to push up toward 10:00 or 11:00 and the strat now needs to be up around 12:00 or slightly higher.

With the 10K the overall volume of the pedal is a little lower. I need to run the LEVEL just a touch louder than I would have in the past. Unity with the Sustain turned down can only be accomplished with the LEVEL at 3:00 - 4:00.

Long story short - I think I may have solved my own problem and my real world test will be at a gig this Friday evening.
However - if anyone has anything they can add to this, or if there are any concerns with what I have done I would certainly appreciate hearing it!