I flew my old trainer yesterday, about 4 years old. Hangar nine easy 2. Still flies great! But yesterday, during the first flight about 9 minutes into the flight, it dead sticked. Landed with no issues. Second flight was all good. Third flight, 7 minutes into the flight it dead sticked again. Glow plug has maybe five flights on it. Held plane vertical and inverted each flight before take off. so I know the mix was set right. It was HOT and humid yesterday. Might have just got too hot? What do "ya'll" think. It is just a fun relaxing plane to fly. Will check the clunk tonight, to be sure that it's not too close to the sides of the fuel tank. But pretty sure that is ok. No indication of air in the lines. Just replaced the tank and all the lines and added a filter about three months ago. I have foam all around the tank too.

Thanks,