o.k. need to use a larger, deep socket to fit the diverter housing; but still need to know what type of screw will tap into the end of the stem, and be strong enough to put pressure on the socket, and without splitting the stem. Any ideas? Continued thanks for your interest in this, and help
comvet

Comvet,

You need bigger than 3/8" socket should be the size of the circle 3/4" or 1" may be the best shot, good luck

John

Take the screw removed for the handle to a hard ware store ans ask for a stronger screw and longer with washers' good luck.

John

Thanks, John. Will give this a shot before breaking the tile/wall.
comvet

Good Luck,

John

The one issue is that there was no screw at the end of the stem - the handle for the diverter was a handle fitted to the slotted stem and held in place with a counter-sunk set screw in the handle. I will have to 'tap' the end of the stem.

Now you may need to open the hole a little more to see if there is packing nut for the stem to be removed, also wait for some other experts to pop in and give theirs suggestions, good luck Thanks.

John