[Elecraft] K3 second receiver install question

[goldtr8 at charter.net]

I am thinking about purchasing and installing a sub-receiver for working 
split and diversity.

When reading the installation guide there is a section called Checking 
and Modifying Resistor R91 and DAC Input Circuits.  I have a 1 year old 
K3 SN 4912 is it safe to assume that this is already incorporated in my 
rig.    I dont solder real well and dont feel confortable with the idea 
of cutting traces.

Thanks

Happy New Year

~73
Don
KD8NNU