RED has announced a fix to one of the most common issues in the V-Raptor, which is the Locking Ring’s malfunction. RED says it has reinforced the V-Raptor lens mount to be more robust when used with heavier lenses or subjecting the lens to high rotational force with external motors.
Source: RED Fixes the V-Raptor’s Locking Ring Issue – Y.M.Cinema – News & Insights on Digital Cinema