Robinson corrosion
I think Frank should leave California, where he is being restricted with pollution requirements for that state. Either that or slow production down to increase quality. Another option would be to release the helicopters in a very thin primer, to which it can be painted properly to the owners requirements at his or hers country, or state if it staying in the USA.
I have seen this corrosion problem on numerous Robinsons and it is manufacturing problem that needs to be rectified.