there is a gap, hard to say how much from picture. You can use some feeler gauges to get a more numeric idea of the gap. It doesn't look horrible. you've got a 1.5 ratio to consider, so it would be proportionately less difference on the pushrod length. Like was posited by another poster, it could be related to hard seat installation, and poor seat finishing to not compensate for stem height. It's pretty common with Chevy engine builders/automotive machinists, not aware of Mopar rocker shaft concerns.