Need help with configuring iron sight zoom level

[doc. caliban 34]

I have a custom version of the Nightstalker that I use in a private mod.

 

When using the sight on top of the scope, it zooms in pretty far.  I want it to behave like the sight on top of the DMS, which does not zoom in at all.

 

The default config for zoom is:

opticsZoomMin=0.25;
opticsZoomMax=1.25;
opticsZoomInit=0.75;

I've tried several variations in the numbers, and have read about the settings in the config reference, but I am just not understanding it properly.

 

Any help would be greatly appreciated!