[Skimmertalk] Harmonics on SignaLink USB?

[Charles]

I'm using a Yeasu FT-897D with a SignaLink USB on Win10, and seeing some of what I think are harmonics echoing in CW Skimmer 1.8. I'be tried turning down the Rx on SignaLink USB to bearly recieving signal, but still see those "echos". What other radio or Win10 settings might I adjust to minimize the effect? 

Thanks & 73s, 

KC1CJN 

http://i29.photobucket.com/albums/c290/cbjesseeNH/CWSkimmer_zps7pog2ugp.jpg