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Unread 04-29-2021, 12:05 PM   #82
Davy
Moderator -- Mud Man
 
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Join Date: Jan 2003
Location: Princeton,Tx.- Dallas area
Posts: 33,410
First, make sure that 2x4 is straight. So many times it's the board and not the mud. Also, make sure you don't have a hump in the mud at the ends that is causing it to look like a dip. Thinset isn't designed to fill in dips but we've all done it, especially if it less than 1/4 inch deep.
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