[Elecraft] K3: Rev B FP Modification for curing Hang VOX problems

[David and Dianne on Comcast]

Hi Everyone,

I am about to perform some overdue mods on my K3 #371.

I notice that this mod (Rev B FP Modification for curing Hang VOX 
problems) is required for K3 #'s 660 to 782 but not on those before or 
after this range. 

As I will have the FP off and the DSP board removed should I do it 
anyway?  It involves installing a jumper between C98 and a pad on the AF 
Gain/Sub control.

I guess I'm confused as to why it does not apply to earlier K3's

Help and opinion will be appreciated.

73 de N1LQ-Dave