The stepping pace can be a very smooth gait. I suspect on this horse it is very smooth as this horse is not being held up overly high in ventroflextion of the back and there is some element of a relaxed flow to this horses gait.
Valucraft, Duralast, and Duralast Gold are AutoZone's private label brands for lead-acid automotive batteries (manufactured by Johnson Controls, East Penn, and other manufacturers).
I have run through several of the Everstart brand gold models from Wal-Mart and know several others with similar complaints. I looked at who makes these and it is Johnson Controls. They also make the battery I bought at the parts store that hasn't had any problems.