There are two models of Randy’s Trek. With the Generation 2 model the glass and ceramic dish are not compatible with the Generation 1 version of the Trek. It is important that you check the bottom of your dish. If there is 0.5 Ω on the bottom of your coil, you have a generation 2 Part already. If there is not a 0.5 Ω you will need to order a generation 2 coil.