@MikeyH
Hi Mike,

Without seeing the full schema, my guess would be a data type mismatch. It looks like the block with the val0-2 inputs might be expecting an integer (long) data type. If that's the case, any incoming real number would get automatically rounded or truncated, which would explain the lost decimal places.
4c1bb596-2757-4241-9838-e73fc8ea7611-image.png

Cheers,
Jan