IMO the hardest part is to realize its ok if you end up with jets that are different than what RB/mazda/some guy on the internet says.

the object is to make the ENGINE run better, and not to have the right list of parts in the carb.

the actual tuning is pretty simple, if you start at idle, work your way up, and only change one part at a time (and write it down so you don't have to remember anything)

the tuning/swapping jets part is fun, i'd actually like to do it more often

 

Pat trust me, its worth the struggle man. The carb is SO simple, and SO reliable, and makes SUCH good noises lol