In a message dated 10/19/2005 1:24:56 PM Pacific Standard Time,
mpteleski@yahoo.com writes:

REgarding the driveshaft... instead of the fancy
bushing...
have  an o-ring groove or machined into the male
portion of this 'piston', and  then fit an o-ring on
it. I keep meaning to do this, but haven't in  my
'spare time'.
mp

For those of us without a machine shop, simply removing the old bushing and
replacing it with the new one would seem simplier and less "fancy" than
machining.

Jim