I prefer mine to the ready made ones but always struggle to get it rolled out big enough to fit my tart dish (10 inch). Today I used twice the amount of ingredients required just to ensure that I would have enough. Took ball of dough out of fridge and started to roll carefully but only managed to get it to about 8 inches in diameter and it was only about 2-3 cm thick. I probably could have tried rolling some more but it looked like it would start to crack. Any suggestions?