[Elecraft] KPA-100 Output

[Roy Morris]

When I drive my Alpha 99 with the K2/100, the K2 POWER control has to be set to approx 17 watts with the TUNE button to put out 1KW.  (A 15 db gain with 17 watts input should put out approx 550 watts.)  It seems that the ALC may be engaged in TUNE but may be breaking down in SSB.  However, I receive good QRO audio reports with no reported problems.  
A few years ago I installed the ALC mod to the KSB2 board but removed it when I installed the KPA-100.  
I noticed that Don replaced C31 (.033 200V) with a .22 in the T-R Switch to tame the sidebands.  
I wonder if I should re-install the ALC mod or replace C31 with a .22 capacitor on the KPA-100 board.  My K2/100 has been completely updated with the latest firmware and revisions.  This includes latest revisions to the KPA-100.  Roy Morris  W4WFB