I learned a long time ago that if your model noses over during a dead-stick landing, the fuel pick-up clunk inside the gas tank could be forced to the front of the tank. This leads to another dead-stick flight when you climb out during the next takeoff, as the engine is starved of fuel during the nose-up climb. I solder a length of 1/8-inch brass tube to the clunk and then attach it to the tank outlet tube with a short piece of flexible tubing. This setup allows the clunk to move freely while preventing it from being forced to the front of the tank. This simple fix works great.