[Boatanchors] Ceramic disk caps

[WØQFC]

When rebuilding  boatanchor gear, is it ok to replace the ceramic disks with 
"Orange Drops"?

In what case would it NOT be ok?

For example, parts list shows a .002 disk as a screen grid bypass. Is a 
Orange Drop ok here?

Or, does anyone know of a good source for the ceramic disks?

TIA es 73
Gene, WØQFC

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AF&AM #91 Lafayette CO