[Elecraft] K2 Faulty menu switch?

[Gerald Wolczanski]

from KI4io - Jerry Wolczanski

My K2 started exhibiting this problem in June and it's gotten worse. 
The LCD toggles rapidly between the frequency and the last menu used.
A tap on the menu switch restores the display to normal.  It was quite
infrequent to start, but now it's bothersome, happening every 10 - 15
minutes.

I re-flowed the switch contacts on the front-panel board this morning,
but the problem persists.

Is this a switch issue or something else?

K2 S/N 7xxx

KI4IO
Jerry Wolczanski
Warrenton, VA