Answer Everett, Once you're sure the tub is centered and seated on the mounting stem, Tighten the clamping nut, by hand using the spanner wrench as tight as possible. Use a hammer and add 1/8 turn by tapping on the wrench handle very carefully(don't hit the tub, you may chip the porcelain) 3 or 4 taps usually does it. Read More... Answered by AppliancePartsPros.com | Tuesday, May 28, 2013