If you are still getting incorrect chords you will just have to correct them.
To see where it's going wrong google the piano chord and compare it to what BB creates and what RC creates.
I tried it with some complex jazz chords and some pg ones were out compared to google and RC, but I'm no George when it comes to chords.
If you find ones RC don't detect correctly you can post it to Attila, just send him the midi and chords pdf.