Sinead Pollard

Hi all, I have recently acquired a large Nabertherm kiln in order to make large peices that have always fired well at my previous shared studio. However, i have recently glaze fired a large piece built in three parts which cam out of the kiln in pieces. It looked as though it had twisted and torn apart. The clay body was a light stoneware covered in a bought clear glaze and was fired according with the glaze instructions. I did notice that the kiln, on it pre-set glaze programme, seemed to heat up very quickly. Does anyone think that if i slowed down the heading ramp that it might have a better chance of surviving? I appreciate this is difficult to diagnose but any ideas would be most welcome!