What you experienced is quite normal. There is no bug. No extra plugin required. Everything is fine !

Balance between the different parts of a style is made inside the Stylemaker.
You are referring to volume set to 90 for all tracks. But these controls are for MIDI tracks only.

In your case of the _SLBLGRW.STY, you can see in the Stylemaker, that PG music decided to put the volume of the Piano track to -11. Try the value that is convenient for you and save the style. For example try value -6 or even 0. Think also to add some brillance with the tone control in the mixer, for ex. set to 10 value. Your guitar part will shine in the mix !
Go to StyleMaker/Misc/More to do that.

That's how the things work !

Please also refer to the BIAB manual, chapter 14 for more details.


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