So far I havn't noticed any real drift in my K2. But then I come from a time that if I had a a + or - 1khz readout with no more than 100 or 200 hz per hour drift on my receiver I thought this was (and it was) hot stuff. Question one... How much drift is typical in a stock K2? Question two... How much of an improvement is there after removing X2? Regards, Helm. WB2ADT