K' Combo...

I saw someone do:
iron trigger,second shell,middle jump+CD,when K' lands:minute spike(!!!!!!!!!),just after another minute spike(!!!!!!!!!!!!!!!!!!!!!!!!!!!!!).
I don't get to hit the opponent with the 1st minute spike. Is there a precise timing to respect?Could anyone help me?

the first one is dash back cancel minute spike.
the second one is little jump into minute spike.

Thanks, I'll try this <img src="graemlins/glee.gif" border="0" alt="[Glee]" />

for small jump into minute spike fast, you need to do it by 2147b/d (refer to the number pad as joystick)

I already knew this manipulation, thx but I think that it is easier to cancel a middle jump into minute spike twice (it functions). In fact the timing to cancel the back dash is too just IMO.
Thx for all, I know get to do this surprising combo...!!!! <img src="graemlins/loco.gif" border="0" alt="[Loco]" />