3A scroll seal

[Jim Wallace <jim.wallace@netscape.ca>]

Wondering if it might be possible to replace the scroll seal without having 
to take off the head ... or to view it another way can it be done without 
lifting the crank so far that the pistons come out of the liners? (with 
engine inverted on a stand.)
Seems like maybe - but also seems like I might be forgetting some obvious 
hindrance....
TIA,
Jim