Shock Insert 1 Hole

hello, i bought shocks with internal springs and they came with 3 holes for oil to pass and it just didn't work, so one morning putting the car back together i had shocks off so i made these in few minutes. works amazing even with 250 shock oil.

dimensions are 10x10x2mm, 3.2mm mid hole, 2mm oil hole.

i did try with 2 smaller holes of 1mm and it didnt work.