it does nothing for the difficulty of the mod. all you do with the top of the pump, is loosen it, take the gov assy out of the top of the pump, then take the gov assy out of the pump and put 2 nuts under the main spring. its the long one. if you dont do it right, everyone on the board is going to hunt you down, and cut your head off (not really). but do it right. there are lots of people that do it, and still end up shimming the intermediate (middle) spring. witch is not right. it wont run right or drive right.