[Elecraft] Stability Mod Problem

[Roy Vickers]

I am in the process of building my k2, sn 29?? and have reached the final
alignment and test. I decided it was a good time to install the stability
mod so that's what I did.
After doing so, I ran the CAL FCTR and that's where I ran into problems.
Before mod: 4916.94 - 49.26 = 4.48; after mod 4917.12 - 4913.73 = 3.39. I
added an 82pf cap across c174 and the result was 4917.08 - 4913.35 = 3.73,
not much improvement. I calibrated the internal counter to WWV and am
confident that it's right on. I've rechecked the component values and
they're correct and I marked the old xtals when I removed them so I know
they're not back in the circuit. Any ideas guys???
Thanks
Roy Vickers