[Elecraft] New Problem after Stability Mod

[Jim G]

Installed the PLL/BFO kit to my K2 (s/n 2105 with Rev A board).  When I
began re-entering the BFO settings I noticed that the last digit would
jump around; for example, if my BFO setting was 4916.30, it would jump
from .29 to .31.  I was not able to set it exactly on .30.  I've also
noticed that I have a frequency instability that shows up every 5 Khz
when tuning.  

Reading the Rev B PDF indicates that this is a PLL instabilty problem.
However, I notice this problem every 5 Khz across the entire 40 meter
band.  It's also showing up on 20 meters.

Any ideas on what I should be looking for?

Thanks- 

Jim
K4GT