If you want a good carb cleaner that you can leave items in over night this is the stuff....
http://midwayautosupply.com/detailed...ption.asp?3042
You can get it at a lot of automotive stores. I've used it many times on my rebuilds. It's a pretty nasty chemical though and if you have people that live around you that dont like solvent type smells, they might complain

If you've ever seen Erin Brochavich,....its got that Hexavalent Chromium stuff in it. So you must be careful. Works like a charm and it's the best cleaner I've come accross!! But remember, whatever you end up getting,....use safety equipment,..gloves, proper ventilation, eye protection, etc.
For the carb, you'll probably need to pour the liquid into a plastic bucket or one of those dishwashing tubs you'd use for camping. The stuff is totally reusable, just wash the parts off in a garage sink and dry em off.
I'm not to sure about the interior linkages for the choke, maybe someone else will speak up soon.