I found this too, they even go and get another case if they think ti will be easier, they are very helpful! Luckily i didnt have too much trouble with series 8, rubbish at series 7 though
I find the partition boxes really useful, you can stack stacking the ones your have felt up. One shop i go too has them in a massive bowl and that is a nightmare, you have to do some serious dodgy stacking!