need help with three handle tub shower hookup. using jado 818 suite. contractor "plumber" used 4/3 diverter as center with hot and cold valves. works, but not ideal. the question is - any three handle tub shower valve body compatible with the jado 818 handles. anyway to modify the pricepfister 3 handle tub/shower valve body to accept jado 818. any assistance appreciated. thanks