Ameritron obviously does not test anything that leaves their factory. That's why they have a massive amount of returns. I can't see how they can make any money doing business that way.
A few years ago, one fellow was hired by his local HRO store....and his exclusive job was to unbox, and test each Ameritron amp sold...before it left the store. The problem was, he had too many of them that blew up...and then required extensive, various repairs. Plan B, unbox each amp, take it all apart 1st, check and find all the miswired components, components wired in backwards, missing components, poor soldered joints, stuff not even soldered and everything else you can think of, including band switches wired wrong, and tank coils leaning over to one side. That alone reduced the blow ups to almost zero.
Next issue is alignment on a lot of their gear. Pots are either set mid range, or fully CW...or fully CCW.
Their entire business model is flawed. IF it's designed correctly, built correctly, aligned correctly, and tested correctly, packaged and boxed up correctly, it should leave the factory to a new owner...and the item sold never comes back.