now, just to throw this out there, you may get different affects between his controller and yours using the 555 mod. (any mod acctually) this is going to be due to the supply voltage of the controller. wireless controllers supply 2-3V and wired controllers supply 5V.
in my rapid fire mod, I stated to use the tlc low curent timer, this operates at the lower voltage. you may not need the low curent timer anymore, using a wired controller. although it should not hurt the tlc to run at 5v.