Cyclo Polisher making unusual noise

[54fuselage]

So I was excited to purchase a Cyclo on my birthday. It was listed as "new/box opened" and I got it at a discounted price, but upon testing it it runs fine but motor makes a noise when shutting down. Sounds like something I've heard before with an electric motor that was going bad, so I've elected to return this and shell out the cash for a new cyclo. Just curious, is something like this common or ever remedied by oiling the motor? Also, does the housing on new Cyclos typically shine like a well polished old Airstream? This one doesn't quite look that way, and has a number of imperfections.

Thankful for a good return policy, but losing on the shipping...

[HiHoAgRV]

These things are completely rebuild able. A friend found one at a garage sale for $15, we deduced it was over 50 years old and the company still had all of the parts available to rebuild it. He was a beautifully polished 1975 Tradewind now and only has about $50 in his cyclo.

[54fuselage]

I've come close to getting an older one but opted for this believing it really was in new condition. Because I've paid a lot I'd prefer not to change out parts already, but I was also assuming it could get expensive. Perhaps it needs a new motor and not just brushes or something cheap.