raggie, can I make a suggestion.
Re-torque all the bolts for your stem.
-the ones for your bars
-- the ones for your fork tube
---the one for your headset
loosen all up ,,, do the headset one first, then the others
...it won't take you much more than 5 minutes
the person who put it together (if not you) probably didn't care that much
& then you'll know it's done right.
My brother used to assemble bikes for a Toys R Us store and had very few returns because he took the time to assemble/reassemble the bikes as necessary. Often he would disassemble portions that arrived preassembled in the box they arrived in to ensure bearing that did not "feel" right had grease or not.
He said he had one boss who said "you have 9 minutes per unit to build them"…… so when he met that criteria the store got a bunch of returns. Mostly for loose stems or handlbars, but not always. Later the boss said "what's with all of the returns?" He told me he retorted "your 9 minute clock, give me 30 minutes and I'll give you zero returns"…… Apparently they reached a compromise and the returns were greatly reduced. But I remember how flustered he'd get because they wouldn't let him stretch and adjust cables or put a dab of grease on the pedal studs for anti-sieze.
So in some cases it is not that the assembler does not care, it is either they don't know how to properly assemble and prepare the bike or they are on some stupid clock. Yet there are those who just don't care as well.
I bought a Schwinn Wayfarer at KMart one year because it was so light weight. Then I saw a photo of a Wright Bros racer. Yes Orville and Wilbur built racing bicycles but they costed nearly as much as a car. Needless to say they did not sell well. Anyway my goal was to convert the 2011 Wayfarer into a 1911 style racer and shave off grams in the process. Actually my initial goal was to own a Wright Bros bicycle and restore it but the 11 known remaining at the time were all in museums. So I opted for the retro-mod thing.
I kept it in my living room for a time.
Eventually it became scary fast after changing some cogs for better top end and adding narrow high pressure tires for less rolling resistance. See, my job at the time had me working near a bicycle shop that outfitted professional racers so the proprietor took interest in my project and sold me some stuff at his cost. Lighter chain, hollow axles, and other minor tweaks shaved off nearly 2 pounds.
One day while in the shop I overheard a lady who had just purchased a $30,000!!! bicycle ask the salesman "do you offer riding lessons?" Turns out she just wanted to spend more time with the young beefcake sales kid. I whispered to the owner "did she really just buy a bicycle without knowing how to ride it?" He chuckled "nah, these middle aged rich ladies are starved for attention, we get that a lot". lol.