Here you go, Jon. :-
image.jpg
image.jpg
image.jpg
The spring space inside the piston when cocked is now 110mm before slip washers.
The latchrod can't be forced into the Sears too far now as the largest guide diameter acts as a stop.
And the spring guide weighs in at 146grams which adds just 27grams to the overall weight of the gun.
It'll be a laugh if this lot don't work.
All the best Mick