Pat Cox from RHC replied to me and advised that their engineers are working on a better solution to the problem.
IMHO part of the field issues with Robinson is that people are so used to working on 206 and other more robust machines, that they tend to gloss over the often very specific called up maintenance actions/inspections.
RHC know their machines well and this is obvious in the very detailed inspection criteria in certain areas. What could be passed off as ok in a 206 (Blade erosion for instance) is obviously not ok in a RHC product.
The point I raised with RHC was that it is a bit unrealistic to expect remote area operators to have access to painting facilties/equipment/expertise.