I have the following glaze already dry mixed. I don't need it anymore.

EPK 2500g
Feldspar 5270g
Whiting 2130g
Talc 400
Red Iron 600
Bone Ash 400

I do need the following glaze which contains all the same chemicals but in different amounts (plus one extra chemical)

EPK 2500g
Feldspar 5270g
Whiting 2130g
Talc 400g
Red Iron 400g
Bone Ash 300g
Rutile 400g

What would I have to add to the first (already mixed) batch to convert it into a batch of the second?