Can anyone tell me the part number for the grill pan? I ordered one from Homespares, part No. 3111565036 but is about 15mm too wide. Strangely, the sides that slide into the cooker are curved, not straight, so even if it was the right width it would not run too well in the grooves. 😕 When I ordered it I could not find info. on that model so I tried my own pan from my Tiara SB200 cooker, which fits perfectly in the 1637. Trouble is, I then remembered that the Tiara grill pan was missing when I got the cooker and I pinched the one from my old Tricity Princess 1588.