I purchased a Grafik T Multi Location dimmer GT-250M and a Grafik T Companion device GT-AD to replace a pair of regular 3-way dimmers that control 3 recessed halogen lights. I cannot get them to work and am wondering if I bought the wrong Multi Location dimmer. Has anyone used this configuration for a similar setup? Does anyone know why it wouldn't be working and if I do need a different dimmer which one should I buy? Thanks for any information.