[Elecraft] mmtty and k3 setup

[John]

Hello All-
     I have had all of this setup before and using  MMTTY and my K3 
working good.  But now trying to get it all working again with new 
computer running Windows 7 Ultimate.  My problem is: when I have mmtty 
running and try to move up and down the band every few khz my rig will 
key up briefly and I can not move freq. while it is keyed up or other 
functions on rig will not work either, which is probably because it is 
keyed up.  When I men briefly it like a fraction of  a second and do it 
several times before it stops.  I am just wondering what the bar graph 
on windows several audio mixer should be and what the bar graph setting 
should be under the mmtty setting in the sound mixer?  If I go above 50 
on the speakers, the rig keys a a lot. There is also a gray line that 
runs all the way across my mixer window so you can not raise the mmtty 
bar higher than the speaker bar graph.  My Vox setting on the rig is at 
.40 and running 50 watts of power and my mic line is set to 7.  To me 
its almost like the vox setting is wrong, like when you have the 
microphone  on and set too lightly and make a noise and it keys the rig.
Any suggestions would be great.

Thanks
John