Hello just bought a bristol dx by hearthstone , install went good ,upon lighting did not work ,The stove now does run longer after i checked log placement ,checked pressure before valve . The stove lights and will run 3 to 5 minutes main burner shuts down and relights with pilot in continous pilot this shuts off too. This has the Sit pro falme technology ,found gas ports my manometer fittings dont fit ,I would like to check pressure before and after valve ,flame rod is in flame .Any suggestions on what other things I should work for.