I have a Duluth Forge FDF300R propane fireplace that was installed before we moved in to our house. It will always light for me, but it seems weird that i get a poof of flame when it finally lights. So I dont usually leave the pilot lit at all, so I start by lighting that (takes a while for the propane to get through the line. Then I set it to on and it wont instantly light. I always have to keep hitting the piezo lighter to get it to light finally and I get a small burst of flame before it kicks in. This doesnt seem like it should do that to me lol. Is there something that needs to be cleaned or something im missing. Thanks!