[Elecraft] Vibroplex Bug

[Denise&Werner]

Hello group
 
Was wondering if anyone had the same experience as I have.
Got a Vibroplex Classic a few months ago and took quite awhile to get the
adjustments right and it is sounding very decent on the K3. No secondary dit
chirp, contacts clean and all is good.
I then put it on the K2 and all those chirpy dits like an intermittent show
up and really sound like a lid on the air. Tried the K1 also with same
results. 
go back to the K3 and all is normal.
All I can figure is the keying circuit must need more time/better contact
than the K3?
Hate to adjust the bug for fear it will be whacked out and take me hours to
get it set to the K3 again.
Not a show stopper but a ponder.
 
Thanks 
 
73es
 
Werner   N8BB