As we are hoping to change NR formulas to 83% moisture and to a Maintenance claim, and because you are looking into Trouw for the vitamin mineral mixes, lets hold off on adjusting the mineral mix. I am working with Marketing to get their alignment and a timeline for this effort. If we can make this change, then the mineral mix used in NR items can be revised for Maintenance and hopefully lower the iron and copper levels that are causing the greyish discoloration in these products.