I am not able to find 0,032 bellevilles in my town,so i decided to try a "simmetric" arrangement with 0,022 washers.I tryed a stack like this: )((()))((()))( and it gave me 1300 psi,so i added a Ninja red shim and now my pressure is 1810 psi/125 bar.The first shot string:293,4 m/s293,7293,7293,4294,1294,5295,2294,1It seems works great,and without pressure creep at full filling,i will try 0,032 belleville in the future for a finest adjustment,maybe For sure the Ninja piston works better than the JDS one like Bigtinboat sayed.Never had this consistency before.Sorry for metric