hard starting

Hello Everyone! I'm having issues with cold starting after recent carb cleaning and rebuilding that I hope I can get some help with... Here's the events leading up to this issue. I have a 2007 KLR with 11,660 miles that I haven't ridden in several, or more, months. I've been riding my other...

I'm having a really hard time trying to adjust my mixture screw on the bike. I end up having to take the carb out or turn it on its side. I was wondering if you guys have a trick to adjusting the screw? or If you have an upgraded screw like this,

I'm new to 2nd gen KLR so I'm stumped - the manual says to shut off petcock when storing, but the petcock is vacuum activated so it's irrelevant - what is relevant is that after a week the carb is dry and Kawasaki didn't put a prime position on the petcock - the dealer said they used to have one...