hello all, First time house buyer, terrible DIYer. My plumper fitted a toilet roll holder in my bathroom. It uses 2 raw plugs to fix to a wall through some tiles. See attached pictures. The problem is that the raw plugs (not pictured) do not secure the holder flush to the wall. Instead they wiggle meaning the toilet roll holder appears to be hanging off the wall. Is there a way I can secure the rawplugs? I was thinking of filling the holes with builders caulk, pushing the raw plugs in whilst wet and then screwing the holder on and waiting for it all to set?