I saw your info just after I have cleaned my carbs. I have a 1991 225 and I did everything you described with the difference that I went a little too far forward
I had disassembled the lower body from the upper body and was able to clean it thoughtfully and sprayed it with carb cleaner ( I used gumout carb cleaner), took all jets and spray them with carb cleaner as well. I did one side at a time; I did not see any gum or similar from the firs carb but I kept going with the others to have them clean while the winter.
On the needle I found that not only counting the rotation on each helps but also I had measure (with a tape measure) the distance from base to head.
I have a quik question, now that carbs are cleaned should I re-spray fogging oil into them or with the carb cleaner should be fine for the winter?
I'm a rookie to the outboard scene but I love and enjoy doing this stuff andthis site have been a great help in every step I had made so far!!