Water has started leaking from my tubs overflow drain, down into a garage below. My tub's overflow pipe is brass, and the two broken off screws in it are steel. Their stubs are about 1/4", weak, very rusted, and they ain't coming out backwards; (in my lifetime). The tub drain can have access through the wall, if its cut out. There may also be cut out access from the garage below.
I'm seeking to postpone paying hundreds to replace the overflow pipe through those ways. What's your opinion that the screws protrude through the back of the brass overflow elbow? But if they can't be screwed out through the back, does anyone know of a quickie repair "bar", that could be inserted in the overflow elbow? That way the overflow cover could be screwed on through that bar. The bar would need to have screw(s) holes threaded into it, that mate to a new overflow cover.
My internet searches have shown me a quickie fix that uses a plastic overflow tube inserted from the tub, down the overflow drain. Its glued on the overflow opening. I'm considering it. But I'd prefer a stronger, screw on "insert bar" device.