That is not a clean carb....thats a half assed attempted at a kid cleaning a carb not knowing WTF he is doing.
Soak the carb in pinesolve for 30 mins to an 3 hours. It will eat everything off it and it will cost you $5. I do this with all my carbs...much longer it will eat the metal. Do no soak your slide or anything made from carbon steal. It will rust it with in about 5 mins.
Rinse off in hot water with dish soap, let dry and install few hours or next day later. You will want a new carb seal also. That one is just too old anymore and if you pull it out it will not seal correctly again.
Soak the brass jets and aluminum only, nothing else. Rest just use carb clearner and compressed air. Also once its back together never let it sit with gas in in the bowls. Drain it out and always run fuel cleaner in every tank. Gas goes bad after 2 weeks now days. Installed a fuel filter also...I sell them down to 150 microns. Use clear fuel lines and you should be golden.
Follow my directions and you will be fine. Do not follow them and well then I give no F*cks what happens.
http://www.ebay.com/itm/401080867868...84.m1555.l2649
http://www.ebay.com/itm/121942441009...84.m1555.l2649
Trust me...been doing this for 26 years.......