I have a shower handle similar to this one and need to replace the shower cartridge.
I'm using this video but am getting stuck on the first step trying to use my Allen wrench to take off the handle. From what I can tell I think the screw is stripped (I shouldn't be surprised, from what I can tell the original builders did everything they could to make it impossible to replace/fix things)
Does anyone know of a way to remove that screw, preferably with the least amount of destruction possible and without having to buy too many new tools. I would say my general level of comfort for home improvement projects is pretty beginner still.
It almost looks like I need a special tool, but can't find anything on the Delta website saying that.