I have a friend who wants to pay me for modding his controller with the dual rapidfire mod... how hard is this considering i have all the tools and i can solder? Ive never done it before and i dont want to be the one to fuck up his controller. How much should i charge him to do it, and whats so great about the dual rapidfire mod compared to the sleeper? Thanks.

dual rapid fire on trigger has option of having rapidfire on both triggers. Uses two additonal buttons for on/off of each trigger

Sleeper only has option of RF on right trigger and uses sync to turn off and on.

As for how much to charge.........depends on how much you like the guy. Seriously tho, it will probably take you like an hour for your first install so I would charge for 1 hour rate plus parts.(how much are you worth/hr)

I have made a kit that uses just a chip and wire for both style controllers. You probably have seen it in acidmods store. Mike has made the sleeper version(also available there), both are top notch as far as quality.

My installer charges $30 for dual RF but it is for more complex program with mode select and led support.
hope that helps, pm me if you want to know more about any of the stuff I have created.
-chad