Thank you, I would definitely need to replace both corks,and filter bag. Gears are rusted together, will wire brush , maybe Swiss files , to see if I can get things moving. No bends, nor visible holes, will do a light pressure test when clean, to ck for pin holes. Are there any cautions, that I should be aware of ? Have volt meter, but unsure as to what to meter ? 0-3- ohms, is the requirement, I believe.