I would take down the jackoboard on the stud work and refit but sticking it with some rapidset.
Screw back through your studwork and fix again using some spring toggle fixings midway between the studs leaving you with a 200mm centre fixing.
Best be safe than sorry especially with that size/weight tile.
Screw back through your studwork and fix again using some spring toggle fixings midway between the studs leaving you with a 200mm centre fixing.
Best be safe than sorry especially with that size/weight tile.