Finally got the last of the polishing done. Not "Show-Room" by any means but a huge improvement over the original condition. All the adjustments that can be pre-set have been done and now simply need to put them on my bike and sync them, set up the fast-idle/choke adjustment and tweek the idle-air screws by EGT to get each cyl. dialed in. Of course that is assuming that everything is "A" OK and the bike will actually do an intiial fire-up on them as pre-set and that they will subsequently accept the final adjustments and run as required (planned).
Since starting this project and documenting it on this forum I have discovered (as I'm certain many already are aware of) there is a wealth of info already out there that encompasses this topic in various formats and some in great general detail although specific subject matter and finer points on these Mikuni carbs. is little to none. Hopefully what i have put forth is both helpful, accurate and informative to a point of actually being useful. Even if it's only informative for one person !
#1 NOTE: There are are number of internet articles regarding the very specific design and machining of fuel jets. These articles state very emphatically that when cleaning jets, attention be paid to not changing any shape to the entry and discharge-end bevels and steps that are specifically designed into the jet for optimum fuel dispersion. This includes the smoothness of the jet bore which is factory "reamed" for smoothness and perfect symmetry - not simply drilled. When having to deal with scale and mineral build-up in our jets, soaking and ultra-sonic cleaning will not always remove this foreign material. Therefore use caution in how aggressively you remove this material "by hand". Remember: We're "cleaning" - NOT re-manufacturing these critical parts, so go-at-it gently and with discretion !
#2 NOTE: The seals on the throttle shaft ends could be damaged if soaked excessively in strong cleaners such as lacquer-thinner. The use of lacquer-thinner for manual surface cleaning and gallery flushing using a syringe is OK.
#3 NOTE:When choosing a knob for the fast idle screw mod. it's recommended the dia. not exceed 5/8" to avoid contact with the fuel-tank while operating the throttle. Insulation in the linkage travel area should be removed as well.
Cheers and Merry Christmas.
ATTENTION BILL: Sorry dude by I hijacked your "Gift" idea ! see the last photo.