Few things you will need:
uknownone's itemtype.dat editor
Step1.
unzip unkownone's itemtypeeditor on ini folder.
Step2.
load the itemtype.dat
Step3.
find your Blade name
example:
a 126 blade is called
SuperBurningBlade.
put on search by itemname
put BurningBlade. (this is an example)
there should be some with the same name..
you should search the blade with same stats as yours.
for example my burningblade has 2076-2765 atack
so i shall search for the one with same stats..
* Check that it is correct attack, same as the one you have equipped.
* Change the "Range" Value to 2.
* Click the "Edit Selected Item" button.
repeat the same step for your club.
Now you should be able to hit double stacks with out use nd/robot etc.