Perils of knitting on the train

This is the lovely Kaffe Fasset wool that I got in the sale after Christmas. The colours are beautiful. I've been knitting it in small bits on the train (using a circular needle so I don't prod my fellow commuters). It is looking good but I've noticed a couple of holes where I must have made a mistake. I think it is going to have to be unpicked for a few inches and then redone. The fine wool (silk and mohair) is very hard to knit with and the lighting on the train is not ideal.