Thankyou for the kind words, but that is just what you do? Anyways Barry, my wife posted it this morning, remember when opening there are four small screws and one pin, the pin just has to be replaced through the shutter leaf slit and into the corresponding hole on the other shutter leaf and made secure. Then reattach the plate with the big pin to go through the end of the piston, bit of a lube of the piston will help.
Bit of air hose and an old tennis ball for an air bulb and you should be in business