Just started to restore a bennett 546B pump, at least that is what it lloks like in Jacks book. No ad glass pump with a round site glass in the top of the doors. The pump has a round bezel that goes around the site glass but no insert i am guessing the insert would be : glass must be full: like the 600 series pumps but those pumps have a horseshoe type shape insert where this one looks like it should be a full circle. Checked the suppliers and cant find anything What do i need and where do i get them Thanks Steve