[Elecraft] K2 memory keyer problem

[n6wg at comcast.net]

It's been a few years since I last used my K2.  In firing it up, I find that I have 
somehow locked the Preamp button into a stored msg mode.  Everytime 
I try to select the Preamp I get a msg being keyed.  I've gone through 
the manual, but can't find a way to cancel this and get my Preamp 
function back. 
  
Can someone clue me in on this? 
Tnx and 73 
Bob N6WG