I have acquired an oldish cromartie kiln, but no instructions! It has no clue as to which model it is either. It is a top loader, small electric kiln with a kiln sitter, and 3 dials on a blue box. One dial is marked 0-full, and is at the top of the box, the others are marked 0-5 and 0-28 and are at the bottom of the box. They have a large 'h' and 'crouzert' on them...anybody know what they may be for? Have tried a bisque firing, and the wares all blew up-complete and utter devastation!. Can any body help me?