Hi. Have a mixer tap unit fitted onto a steel bath. Plumber did not manage to fit it 'square', ie, parallel to the wall, so looks awful. Also suspect that the rubber gasket has been damaged owing to the use of 'Dettox' to keep on top of black mould. Intend to refit the unit probably using flexi tap connectors to overcome any alignment problems that the plumber had. Do not wish to reuse the gasket but plan to smear bathroom silicone sealant over the base of the mixer unit to, hopefully, make a seal and then refit. Will this work?