How to delete a round robin sample

[fretman]

Flatpick 6 generally sounds very good, except when capo'd 2 and playing the "F" (now a "G") on the D-string. It has this really strange off-harmonic high-frequency ring associated with it. It does not not go away when I reduce resonance amount and/or length to 0. Since this note is very common in bluegrass this makes the instrument basically unusable. It really stills out in the mix. Does anyone else hear this? Has anyone been able to find a way to get rid of the ring? Is there a way to delete that round robin sample? I appreciate any help you can offer. I want to get this to work because I like the general sound this instrument is giving me.