I have an unvented gas stove with ODS. It's been working great until recently. First the stove would come on immediately when switch was put to Thermostat position regardless of T-stat selection. Then when I started to troubleshoot that I turned off the gas. When I turned the gas back on to see if I fixed the problem, the pilot won't light now. I called a local dealer and he sounded uncertain. He suggested "maybe replacing the entire ODP TP assembly". Any suggestions? Thanks!