hello all..newbe here..to the site and to plastering..went to look at a job today where the corner bead is pealing away..its plaster board,then skimed, then this bead looks like its just pushed in the finish..it doesnt meet on the corner/angle..its two bits for both sides,its 12mm wide and really thin...its pulling away from the finish and they want a new bead fitted..has anyone come accross this before,would love some advice..can i get really thin bead.would i have to chase a bit out or should i try n make my own corner???...thanks for any advice...Zach