It wasn't so long ago that the Robinson warranty
was only one year rather than the current two.
http://www.robinsonheli.com/document...4_warranty.pdf
If I stretch my mind back to 1988 and my first R22,there was a problem with the engine after just a few months which necessitated the engine being removed and sent to the Lycoming agent. The engine problem was fixed and the engine re-fitted by the Robinson distributor who then sent me a bill for the labour involved in removal and re-fitting the engine plus transport.
During subsequent discussion I was told that as this was a Lycoming problem I should look to them for reimbursement. To which I replied that I had purchased both the engine and airframe from them as one entity and it was thus their responsibility. I also mentioned Sale of Goods Act and merchantable quality.
No further discussion or correspondence took place.