To get even reasonable results, you HAVE to do the following:

1. Convert to SFF1 format.
2. Convert (not change) all Mega voices to normal midi voices.
3. Only THEN use EMC to convert to Ketron.

Any other way will end up being a total waste of time. EMC (the latest version) will attempt to do all of the above, but will fail miserably. Ask me, I've been there...