Ted,
The OP seems to be satisfied with his, with the exception of his concern for the motors. Furthermore he's identified a reasonable approach to fixing what ails them. Are you saying that he should throw them all out instead?
How about the rest of us that have them? Perhaps we should too? No thank you. I'll stick with mine. They work just fine for the toys that I run through them.
However, if I was into 3RS then it would probably be a different story ...
Mike