I do understand what you are attempting to get done but it could be an effort in futility. Follow along if you can. In my opinion the only parts I would use in an old style carb are pure Yamaha OEM ones. Others have had success with after market rebuild kits but not me. Buying all the internal OEM parts will add up quick and could easily surpass the $100 mark. Also and for some mysterious reason not all carbs can be cleaned and rebuilt to function correctly anyway. It is possible that inside the carb there is a passageway blocked or some other undetectable issue that could give you fits trying to figure out. Then there is also the shipping back and forth to a member plus the shipping for all the parts to the rebuilder and still no guaranty the carb will function well in the end. It is a complete PITA removing and installing carbs from the get go and if your connection boots called Joints are stiff or in poor condition you will never get a complete air tight seal which is imperative with these carbs.
The last time I bought a brand new OEM carb it cost about $265 and I installed it after removing the pilot screw plug and setting that screw to 2.25 turns out from bottom. The carb performed perfect as long as the seals on both sides were tight. No more headaches and I never had to take it off again. This of course depends upon all other possibilities such as the petcock being blocked or junk in the tank and even garbage ethanol fuel being used. Those who enjoy messing around with intricate carbs will certainly disagree here but for those who are not proficient in these matters I highly recommend you just buy a new carb and be done with it. Put the old carb in the classified or on the auction site and let someone else deal with it and the price you get can offset some of the cost of the new carb.
I could rebuild your existing carb easy enough but I can't guaranty it will ever work right so I won't get involved. There are a lot of members here who know these carbs inside and out but it will surprise me if any of them take on this challenge. On my very first 1991 TW I paid the Yamaha shop mechanic $125 in parts and labor to fix my carb. After 3 attempts he became completely disgusted and just told me to buy a new carb and never, ever use ethanol fuel in the bike again.