If you have access to a bunch of different brand roller rockers, grab one shaft and slide one of each, side by side and notice the variation in roller pin location, pin to shaft centerline. It's a big variance for something that's designed to fit the same head. Some will be close others not so much! BB mopars have the same variation from manufacturer to manufacturer.
Cranes look like that on just about every SB mopar I've ever seen and good luck fixing it without significant machine work. Harlands were even worse towards the exh side. Moving the shaft is essentially the only way to fix it to get a proper in-out-in sweep.
Hughes rockers are actually pretty good from a geometry/sweep standpoint.
