So unlike Andysue I actually got a response (2) back from Humax customer support yesterday. The first response just asked "Is it on a glass shelf?" That was it, no boiler plate were really sorry you're having issues or were suprised to hear about that as our machines are thoroughly tested to prevent noise.
I wrote back and explained (Again) that it was on a tempered glass top on built in bedroom furniture but that putting felt feet or a cloth underneath or even lifting the machine physically made no difference when the HDD was chuntering. They wrote back again within minutes of my reply and said the vasy majority of complaints we get about noise is where the machine is on glass. END. No we can look into it for you, no were sorry, nothing!
Think it told me 2 things:
1) Humax are well aware and this is an issue of some volume (no pun intended).
2) They dont care, unless it hits their bottom line sufficiently they will carry on risking the odd return in order to skimp on build quality to hit a price point and achieve margin and just re sell the returns as graded machines rather than invest in getting it right out the gate.
Richer sounds however responded to my review and have been excellent. I have video and audio to demonstrate and will try and pop in after the snow clears. Machine is still doing it but less frequently so will monitor for a week and see how it goes. In 'quiet' mode its audible but bearable, when it has its little fits it make me want to return it straight away.