I have been hesitant to post because I do not own a DLE-111. However I do own a DA-100. Here are my thoughts.

1. It sounds to me that the needles are set up on the lean side. Here is why I believe this may be your issue. You stated it runs fine for awhile, then it does not accept your throttle response from the transmitter then eventually dies. Am I correct?

2. If the above is correct. I would like you to check a couple of things.

3. open both the low end and high end needles about 1/8th of a turn. (about a flat tip blades width) and try again.

4. I am assuming this is a new engine. Even so check the tightness of the carb to the block and ensure it is tight and no leaks are present. DONOTGORILLAtighten. Just make sure it is snug.

5. Ensure all of your fuel lines are snug and free of air leaks.

6. IMPORTANT. make sure your spark plug boots are correctly seated on your spark plugs. You may think they are but double check and ensure they are seated all the way.

I really suspect you are simply just too lean. So it may just be a simple carb adjustment. Do not fear opening up the needles. A new engine is going to need some ground run time and now is the time to open the needles up a little and then adjust them after the engine is running dependably. Once you can get the engine to run and accept throttle input on the ground then adjust the needles leaner after you have some time on the engine. Remember, it does not take a lot of needle adjustment on a gasser.

Good luck and keep us informed.