Outer tank fuel wont transfer automatically at those fuel loads , but you can manually do that from the flight deck on arrival. We do this in cold conditions if landing with them full. The two problem areas are the inboard wing root and over the main gear supports . We find on UK arrivals on a 7 hr sector at a high level that we have this problem for 5 months of the year , plus being on a 90 min turnround gives little time for warm fuel to melt the frost . On the 330-200 i have a look fwd on both sides from L/R3 doors . Theres always a lot more there than visible through cabin windows . The patch over the gear is a problem as highly visible to pax . Problem i think is that 'frost' shouldnt be a problem , but as per 'the book' and FAA regs in particular there doesnt appear to be any way out of this as its technically ice . Aware of a problem with this on a 345 in Australia last year in the summer on a short transit after high level ULR flight, melted in sun on one side but not the other, had to turn around and let the other side melt , long delay !