Just thinking about the alignment forces in play..... After more thought, aren't the rollers self-aligning on the cam lobe ramps? Wouldn't any twist would be fought by the pressure from the valve springs? Seems like the links should be a bit loose to allow for this 'auto-alignment'.
Which begs the question of why have the links at all, as long as the valves don't float....??? Or can they spin around freely when on the base circle?
(Seems like if the axle and/or centerline of the lifter was a bit offset from the line passing through the center of the cam then it would essentially be self-aligning... sort of a caster effect. Not possible to guarantee that on an older block I suppose.)
