First thing is make sure the fire grate is sitting up high enough so air can get under it. Place something like a couple bricks under it but make sure you will be able to clean some of the ask out during the cook, so don't place the bricks in such a way as to restrict removing the ash I had one of these and you really don't need the charcoal chimney starter, just wad up about three fist size sheets of news paper and place them under the fuel such as lump or charcoal and drizzle some cooking oil on the paper. Open all the vents and leave both fire box doors open, light it up and go from there. I don't care for a chimney starter, I think they are dangerous and are a pain but others will disagree I am sure. Using the method I have described I have never had to relight a fire. Good luck.
MY DEFINITION OF AN OPINION.
I can only give credence in facts I believe factual. If those facts are wrong, and are proven as such by facts, I must only give those facts credence, if I believe them as factual.
When the going gets tough, I take more fiber.