Son taking motorhome away tomorrow and I've just done pre-flight checks and found a piece has fallen off underneath the cooker. Long right angled shaped piece as in photo. Can anyone please tell me where it has come from and how it goes back? I've spent sometime offering it up but it only has holes at either end and I can see no protruding spigots or whatever to hold it in place, if I knew where its place was! It matches a shaped profile underneath the burners so I suspect it might be from there but can see no means of holding it in place. Bit of urgency involved so many thanks for any advice.