The phrase "due rather to" is grammatically correct and can be used in written English.
It is typically used to express that something is more likely or strongly influenced by a particular cause. Example: "The decline in sales was due rather to the economic downturn than to any flaws in the product itself."
The circling was due, rather, to what Souman calls "the accumulation of noise in the sensorimotor system" — small navigational errors that result in drastic diversions.
As the standards of British restaurant cooking improved (not, I think, because of the influence of any critics, but due rather to changes in society and attitudes), so did the importance and accuracy of the guides themselves.
When development interventions go wrong, or do not work the way they were intended, it is often no one's fault, due rather to events beyond any individual or organisation's control.
The resulting films were found to have a nanostructured character presumably due rather to birnessite (δ-MnO2) than to γ-MnO2, as suggested by their Raman and XRD signatures.
It is true, no doubt, that the ravages of vodka and absinthe are worse than those of the spirits consumed in this country, but the difference between our attitude and that of France and Russia is due rather to the intensity with which they are forced to realise the war.
Millet's attack centred on style, but many felt that France's international literary decline was due rather to its relentless bleakness, known as déprimisme, and to the trend toward navel-gazing novelizations of authors' lives, known as autobiofictions, whose hold on French literature seemed only to tighten with time, despite the growing sense of tedium with which they were met.
But his success in bringing it off was due rather more to his professional kinship with Big Tom Foley.
Politicians should also give credit where due, rather than appear to grab it for themselves.
Interestingly, the increase in their number was not due to further recruitment, rather to clonal expansion within the muscle.
Due to rather high divergence of REPs, it is not possible to construct their accurate phylogram.
V(IV/III) was deemed unsuitable as a redox mediator, due to rather poor kinetics.
