Grandmaster was the bull that I thought would fill that void; a calving ease mating for Dream On pedigrees (Built Right, Steel Force, In Dew Time, etc.)
Trademark would be an obvious mating that we use on many Dream On family decendants, but I wouldn't recommend him on Built Rights, as they are both out of Ebony Antoinette. The majority of the Built Rights that we have bred as heifers have been ai'd Angus. It's a challenge to find an outcross bull to nail it. Assuming that you want to breed them back Simmental?
I've got a growth bull picked out that is making them right, but haven't found the sure bet calving ease bull yet for the Built Rights.
We've used Invasion with decent success on heifers, though many of the same negatives come up with Invasion as we've seen with Grandmaster.