Kitkat,
Years back my Kn6000 had that same problem, after 10 trips to N. Miami ,100 miles round trip it was not any better. I feel the technicians were at fault, I do not think they were trained to work on keyboards. Bottom line; they gave me, no cost a new Kn6500.

After the problem was over I learned that the problem was in the keyboard contacts. Bob’s post is right on the subject, his knowledge is good, “poor or erratic contacts of the key mechanism”.

John C.

PS, A spider in the keyboard?? I wonder how good of a player he was.