Get the right size screw driver and stand in the pool and tighten all the screws one at a time and a little at a time. take one hand and press in from the outside. Go once around and see if it stops and if not do it again. Be patient and do it by hand and do not use a torque drill. Hope this helps as I had to do this after I installed my 27' pool and installed the skimmer from the outside. After it filled it was leaking and tightened up from the inside and it worked.
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