Hi Alan. I'd have to have one in my hand to make a call on how to modify a
Lenco for oil compensation but It doesn't look too tough from the little info I
have.
On the bellows part, I have extended the bellows to include the first
"link" in the linkage train so the bellows need not collapse quite so much.
It's working on the Firgelli's I have and should work just as well on the
Lenco's.
Here's a quick sketch ( very rough )
As far as the Lenco casing and drilling it, again you'd have to get one and
see. Even though it looks all sealed, I think a full chamber made of FRP or
machined from metal would be needed to completely enclose it so the oil was
sealed in and water sealed out. Frank D.