It didn't work for me so I changes it to Hold_98 and it worked ok.
Soloist > Open Soloist > choose All RealTracks (top left) > choose 2915 > Soloist Maker Edit > More.. bottom left > change Hold number.
You can try other Finger Electric Bass (34) holds.

You can make a backup of default.sol and rtextra.bin in bb\data first to keep the original settings.
When it's fixed change it back.