Help with Belling Gas Cooker G756 WH

In a nutshell, I’ve taken it apart and I can’t put it back together 😕

A few weeks ok the grill broke, it just looked like a few screws had come lose – we never found the screws – and the grill had dropped down rendering it unusable. Yesterday, in an idle moment, i thought I’d have a go at repairing it.

To access the grill effectively it looked like I had to remove the grill door. To get the grill door off, it looked like I had to take off the main oven door. I managed this OK, but with hindsight perhaps I shouldn’t have removed ALL the screws holding the oven brackets on. So, now I can’t get the oven door back on, and I couldn’t even at the grill after all that anyway. The oven door brackets were screwed to a brackets behind the ‘main oven front surround’, they have now dropped into the abyss. I can’t get the ‘main oven front surround’ off, despite removing all the screws holding that on.

So, the question is really…where do I go from here? Is it possible to get the oven surround off , and if so would I be able to retrieve the brackets anyway?
Thanks in hope 😉