[Elecraft] K3/100 low power setting "gap"

Dear all, I have a kind of luxury problem concerning achieving output powers in FSK between 9.5 and 13W. The setup: a relatively new K3/100 with the last firmware a recent TX gain calibration. I'm doing a lot of RTTY, mostly in submode FSK D. Now I hooked up a 1K-FA linear amplifier which has

[Elecraft] K3 PA temperature reading jumps / hot smell

Dear all, my K3 (S/N 8862) is developing a strange behaviour that is beginning to worry me a bit... Current firmware, assembled as kit, power calibration just repeated to be sure. First -- and this is not really new -- from time to time it produces a smell that is best described as 'hot', like