WestfieldBRB

Thanks all

Guys, A guest visit but I hope you guys can help. I own a Westfield 7 kit car running on an English live axle with 9” rear drums from a mk 2 escort. I am in the process of reconditioning these but have noticed that both drums are not fitted with a small grub screw that holds the drums against the hub. Can anyone advise what the size of this grub screw is so I can get some ? I also noticed that the rubber blanking grommet is missing on one side. Any idea where I can get a replacement one ? Photos below may help. thanks