Stumbling cold start ups in the mornings...

FWIW my gunked up IAC creates this very same symptom....its just a bit slow to wake up, the cold makes the gunk down in there so much thicker than on a warmer start it jsut takes a couple extra seconds to do its thing and get the idle up where it should. Definitely a tell tale sign to clean your TB and IAC. Be sure totake the IAC off to clean aswell. If left on during the TB cleaning it can just end up with even more grime and gunk down in the IAC. Be careful with those screws on the IAC aswell! They can be a bare and remember those screws, although look to be a normal Philips head they are not! They are JIS (i think, im questioning myself on that)screws and dont fit a standard american Philips bit perfectly, just be mindful of it and be careful it'll be fine and you can get them out, they strip very easy though!!