My Englander PDV25 has been having a bear of a time starting up the past couple of days. Everything seems to be working, augers are spinning etc. but it won't spark. I've made sure that everything is cleaned out but it's still not starting by it's own. What could be wrong and what should I do? I can start it with a bbq lighter but still...that's a band aid and not fixing the actual problem itself. Any help would be appreciated