There's a spring which fits "somewhere" behind the big nylon cog (inside the main safety cover) and the one on my planer snapped last year. I've got a replacement spring, but can't see where it attaches. Is there any chance someone could take a photo of the inside and reply so I can see? I know it's a very odd request but as these aren't kept on display in ScrewFix I can't see another way of finding out. Their tech support people only have the same manual as us customers! Many thanks,