Re: roti
We dont actually knead the atta by hand, we use one of those Kenwood Chef machines... in fact i dont think i can remember a time we havent had one in our kitchen. It makes it a lot faster to make the atta, but it still takes some practice to get the proportions of water and flour right - i nearly always end up putting in too much water at first and then have to add more flour.
and Jias is right... the perfect roti's start with good smooth dough, its easy to forgive a roti that isnt round if the texture is good.