[Elecraft] K3 synthesizer spur?

[Robert Redmon]

I have recently noticed an unusual spur on 20 meter ssb (enters the 
passband at about 187.3 and exits at about 187.4). It is apparently a 
synthesizer spur as it tracks with vfo knob movement ....except in the 
opposite direction and in steps x10 the tuning increment. Have a similar 
spur on 50 mhz (about 50.094). Anyone else noticed this and/or 
discovered a fix? It jumps about 50khz down when I change the mode from 
usb to lsb on 50mhz.

73, Bob K5SM