I probably didn't make it very clear. Neither aircraft could fly without MR servos. On the Wessex, with primaries out the secondaries could push the MR jacks no problem but would struggle to oppose a primary jack hardover/runaway - if you had a control problem and incorrectly took the secondaries out you would allow the primary hardover free reign and probably die.
ok - yes I knew you couldn’t fly them hence my puzzlement.