[Yaesu] 1000d - Sticky QSK?

[David Jones]

Hi All,
Might just be me, but this past weekend in the ARRL CW I noticed that, while
in QSK mode - low power, no amp - my code was sounding a bit irract (the rig
not me).  Had several stations ask for repeated fills, then when I punched
in the Vox, they seemed to copy without a problem.
1) Is it possible for the QSK to get sticky in an FT1000d?
2) What should one check to determine a problem?
Thanks

David VE3STT
ve3stt at rac.ca