It’s probably still just really hard to start because its brand new, and has a very tight pinch. Plus, you haven’t been able to run it yet to see how the needles are acting. You just gotta keep trying, and it will most likely start running. It’s very rare that an engine that’s new out of the box has a defect so severe that it will never start. Just make sure that you ALWAYS heat up prior to starting. I would suggest a heat gun, and not a hair dryer. A hair dryer will work, but it doesn’t get as hot as a heat gun. So if you can find one, use that. Especially with the amount of pinch your new engine has. More heat might be precisely what you need. Also, prior to your first pull after heating, make sure your piston is at full Bottom Dead Center. This will assist only your initial pull not being hard to pull, and get that crank to fully rotate that first pull. Always check your glow plug after every couple unsuccessful attempts to start. Never know when it goes out and then you are trying to start an engine with a bad glow plug. Keep at it, man. I’m sure you will get it running.