I find that 90% of the time people have such problems with a new engine, is because fuel is NOT hitting the carb yet, when they think it has...

That's assuming everything else is working correctly such as the ignition...

If you have a cowl on the plane, take it off until you have the engine tuned.

Flip the engine over until you see ALL air gone from the line to the carb... then flip it another 4-6 times to get fuel into the carb.

Then try a start with NO choke and the ignition on.

The DLE should start right up if you haven't touched the needles from their factory settings.