130 / 80. 7 holes, 6.5 mm spacing between holes. start holes 4.5 cm from pointed end of long strap
2 mm leather. skive down to 1.2 leather where the strap doubles over itself and spring bars are inserted.
if 4.5 cm from tip is too much, we can make it less.. that is just an estimate.
Note: second keeper is floating, not fixed. (but i think you can see that)
is this okay for you?