Nooby the bushes are the ones with the red teflon impregnated liner. I say that there still not good enough, we need proper long life carbide bushes like all the other decent helicopters. We should get at least 600 plus hours out of scissor bushes.
Have you tried the newer profile tires yet? They look like they were made for Fred Flintstone, they have a rather squared off profile compared to other helicopter tires.