[Elecraft] KX3 - CW glitch with KXPD3/keyer?/Cleaning contacts

[Ron D'Eau Claire]

I use a chemical de-oxidizer/cleaner on my key contacts: Caig DeOxIT. It's
not cheap, but the tiny 25 ml squeeze bottle I bought years ago is still 80%
full. 

I squeeze out a drop that hangs between the open contacts for a few minutes,
then I wipe the excess off with a bit of paper. One treatment lasts many
months, in some cases more than a year. 

That problem did not exist before modern solid-state gear. Significant
voltage/current flowing through the contacts provided a "self cleaning"
action that broke down oxidation and other contaminants. Unless one
carelessly used the key on a circuit that produced arcing, it was extremely
rare for key contacts to require attention. 

But, with the miniscule voltages and currents sent through key contacts by
modern gear, I found that keeping the contacts clean was a constant hassle
until I stumbled across the DeOxit.  

(No, I don't own any stock in Caig...) 

73, Ron AC7AC