Quote Originally Posted by Jon Budd View Post
.. you shave 11mm off the 98mm stroke, so 87mm - great at 23mm bore.
Quote Originally Posted by NickG View Post
, I now have it at 85mm stroke 180 grams , and a mark 3 spring, it cocks nicely, and is a much softer cycle ,

85mm vs 87 mm completely independantly - close enough My piston weight is around 175g too