Ah, actually, doing a bit more research it looks like Synth users are out of luck editing frqs. But if you manage to bypass the hell that is MacOS, frqeditor is a 3rd party program by nmasao (iirc?) that allows you to edit frqs. I'm not the best at explaining, but it's a very straight forward...
Checked the vb, and for 'a こG4' its an frq issue as seen below.
It's an easy fix, as well as a common problem in multi-pitch vbs( in my experience, since it's harder and more time-consuming to check every. single. sample. for minute problems like this )
But I can't see an obvious frq problem...
A friend of mine does midi commissions. His twitter is @orbtunes for examples (plus this cover I did), and his email to contact him about commissions is tenshifos@gmail.com. He does great work, and honestly doesn't charge much.
In Audacity you can also use Macros so you don't have to import every file and risk audacity devouring your computers performance.
Tools > Macros
In the [Manage Macros] window select [New]
Name the Macro, I'll call it 'wavcon' for this
At the bottom of the window with 'wavcon' selected find...