My personal rule about Harbor Freight.
Don't buy anything until you are ready to use it and use it hard the same day or two. Not stupid hard, but hard like you would have to use it from time to time. Then if you can break it quick you can get your money back. If not, you got a good one. If you wait too long, then they just do replacement, who wants another one if you can break it?
Example 1 - bought 2 angle grinders for 14.99 each on sale (I have a MaK**a that cost $79.) The HF one sound like there is sane in the bearings, but for body work they work fine (then i don't need to change from wire wheel, to cutter, to grinder tools on one angle grinder.) Not bad for $28 total.
Example 2 - bought their version of a porto power, it was a POS I broke THAT guy in about 1/2 hour, wasn't even much of a hard job, not like I was going out of my way to break it.. Got my money back same day. So I bought a real Bl**kHa*k proto power and spent the big buck, but it is awesome, can't break that one.
I suppose one could try a replacement, but then you get in how much time you invest and is that worth it. My 2 cents worth.