With a little patience and armed with the proper screwdriver (and I do mean a perfect fit for the pilot) and 8mm wrench you can drop the bowls and change all of the jets. A small mirror, like one from a woman's makeup compact, is an able assistant; also, a white towel on the engine cases to catch the errant screw can be very handy.
To me the most difficult moment came with the two float bowl screws that double as the idle adjustment holders. It's tight quarters and the screws just seem a skosh short for the job.
