More and more, judging people's experiences, it seems to be the case that the best way to deal with the axle box problems and the sound fitting is to do it yourself! Fitting sound - and remember, it's Bif's anyway - is really easy although a bit more pricey buying it separately and the axle boxes just require care and attention to get them secure and non-wobbly. I did this with my 66's and now feel quite chuffed (is that an inverse pun, I wonder?) that I fixed them and that they run beautifully. Yes, I agree that the models shouldn't be faulty in the first place, but the fact is that some of them are, and appear to be being 'recycled' for other faulty models. Stay alert - fix your models - enjoy your 66.