It is a new gun, I'm going to give it a good cleaning and then take a look at the magazine.I have a S&W shield and one of my magazines was very hard to load. After disassembly of the magazine I found the spring had folded over on itself. Be cheap I straightened it out and now it works just fine.
That being said I do not own a hand gun without at least one spare magazine. Is this the only gun you own? Was it a used gun when you acquired it? A good cleaning may be all thats required.
One note of caution, I would take it to a good gun smith before adjusting or trying to adjust the lips on the magazine. If you determine the magazine is the problem.