With a recalitrant . ( Means Mega STUCK ) one , I got a gutter washer / penny washer .
ACTUALLY likely a Ford Washer , that slotted into the rear case , on a S Tigre 60 .
And a bolt and a nut .
The Washer was the same O.D. or suchlike to the liner .
THEN with a piece of tube - I.D. to fit over Liner Flange O.D. , Top ., say 3/4 deep - to give a bit of ' lift ' before it all ends .Or a Socket .
So the contraptions assembled - The CASE HEATED - and wind away .
A vague resemblance to these , with the bits swapped around , and a washer . Maybe off a shock absorber . not a cheap thin nasty one , Dosnt want to deform .
Get it ALL SQUARE & ALIGNED , so as it dosnt jam with side forces .