Jep, TM34 has a accelerator pump. If you hold the carb in you hands and turn the gas, you can see a little fuel rey coming out of the jets in each carb.
When the Baghi is out and I turn on the gas for some times, I have problems to start her, but after a few tryings she runs again
Sometimes the spark breaks in fact of too much fuel....but if you got the clue, it´s no problem....if not.....hm....
The Keihin is good too, I guess but he´s maybe a little bit too (1mm bigger than TM34) big for a normal engine. With a normal engine and the TM34B65 (it also exist a TM34B70 and bigger) is very spontaneous, maybe to spontaneous because some guys don´t like the carb on a standart motor....When he´s tuned, the carb can show his ful potencial
The Raptor carb is an impulse carb (in german "Gleichdruckvergaser") and has no accelerate pump.