First, what it is that I really need to know- can old leather seal cups be "reconstituted"? I tried on an old lantern I just got from a garage sale and it doesn`t seem to be doing anything. Just buy a new rubber style one? I know the rubber kind fit, but in the spirit of adventure, I kind of want to get the cool leather one working.
Second isn`t really important, just something I`ve been wondering. What`s the purpose of that square rod that turns with the pump button?