It happens in China a lot. Don't feel bad. The HG trucks are actually pretty decent. The Tamiya stuff in my opinion is way, way overpriced. So I don't feel a bit bad for them. HG is one of the better Chinese RC companies. Their tanks is where they made their name I believe. They have quite a few...
Oh, as for the bearings... I meant to comment on this in my first post, but somehow spaced it...
Me personally, I would steer clear of anything Yeah Racing makes. It might cause you a bit of downtime with the truck, but I would tear it completely apart, measure all the bearings, and just order...
The main reasons I don't believe HG is the OEM is because on some of the P407 bodies, the lower edges of the bed are slightly warped, and sucked inward, due to them pulling the body from the molds a bit too early. Something Tamiya would not tolerate.
There is a bit lower quality look and feel...
Great looking truck! I wonder how much of it is completely compatible with Tamiya parts. I am betting a LOT.
As for HG reverse engineering... they did exactly that with the HG P407 Bruiser clone. They did such a good job that even the body parts from the Bruiser fit the P407. So I would bet...
Stainless is corrosion resistant, but not corrosion proof. Any contact with aluminum by any other metal will cause corrosion at the joint, even if it's a stainless screw in an aluminum plate. A rusted steel screw is far easier to remove than a corroded stainless screw.
And stainless is far...