Tejas sells one---Here is how they describe part number 1504 below...... you think you could adapt this? its only 20 bucks! Let me know, and I can still PM that friend of mines number if you need it, but I will need to ask him if he is Ok with that. His primary business is equipment, not parts. If anything, he will certainly be able to help steer us in the right direction:-)
Log lighter pipe / gas assist with brass adapter (to fit a LPG hose) The LPG gas log lighter pipe will save you a half hour every time you start your logs. Simply turn on the gas from your propane tank and light the log lighter, wait a few minutes, and the logs are in flames. This procedure also eliminates the need for using charcoal and smelly charcoal lighter fluid. The natural gas version is available at the same price by request. This unit also works well as a gas assist for maintaining a constant temperature in a pit when you don't want to use wood logs or charcoal. A relatively small flame will maintain the pit at 225 degrees (or higher). The log lighter pipe itself, not including the cast iron venturi (gas/air mixing chamber) is 16 1/4" long. Measuring from the end of the venturi closest to the pipe, there is 4 1/4" of just pipe before the first hole. Then a series of holes continue for 10 1/2". Measuring from the last hole there is 1 1/2" of just pipe to the end of the unit. It all adds up to 16 1/4" of pipe length. The venturi (gas/air mixing chamber) is 3 1/4" long. The entire log lighter is 18 1/2" long. Wt. 1 # 11 oz. Free shipping.