Hi Andy , that little plug is called a frost plug over here , like they used on BMC minis , anyway to fit it sit it on a socket and lightly press a ball pein hammer into it to make it more concave then put sealant into the recess like shellac and use about a 10mm flat punch to go around and around until it is nearly flat but not pushed in . Hope this helps . Cheers
@@Cobra427Veight Cheers seems to be a few names for them..... Welch/welsh plug seems popular too.... Found some right size on the ebay.... But good point on a little sealant... I will use some. Merry Christmas 🎄
Hi Andy , that little plug is called a frost plug over here , like they used on BMC minis , anyway to fit it sit it on a socket and lightly press a ball pein hammer into it to make it more concave then put sealant into the recess like shellac and use about a 10mm flat punch to go around and around until it is nearly flat but not pushed in . Hope this helps . Cheers
@@Cobra427Veight Cheers seems to be a few names for them..... Welch/welsh plug seems popular too.... Found some right size on the ebay.... But good point on a little sealant... I will use some. Merry Christmas 🎄