Can you get it to idle right? If not, will giving it a little choke while idle help correct the troubles? If so, I would say it could be a little lean in which case you will have to adjust the air screw (in?), or if that doesn't work increase your pilot jet size.
The way I understand it, a boost bootle will lean out your low end, maybe you're too lean. Of course it doesn't make sense to use a boost bottle to lean it out, then have to use bigger pilots to richen it back up.