[Elecraft] [K2] Installing old KPA100 in a 2nd K2?

[Steve Kavanagh]

I have recently acquired a used K2, my 2nd (S/N 5133).  I am just wondering what it would take to install the KPA100 from my older (S/N 4509) K2 in the newer one and keep it usable with the old one too.   I have been perusing the KPA100 manual (current version) and it appears to me that all I need to know is on pages 23-25 and 55.  S/N 5133 is missing the Aux RF plug P6 on the RF board and (I think) the associated C224, so those need to be added.  The manual which came with it says CNTL-C42 is already 0.1 uF (to be confirmed) and the MCU firmware is 2.04P.  The tasks on page 59 do not apply since the S/N is over 3000.  So it looks like all I have to do once RF-P6 and C224 are in place is to break off pin 4 on CNTL-P4, scrape off some paint and plug in the KPA100.  Am I missing anything ?  No alignment steps which might make it incompatible with the older K2?  What about CAL tPA (p. 49 of KPA100 manual)?  Is this calibration stored in the K2 or the KPA100? 73,Steve VE3SMA