Now at take off when I first start the bike it bogs down a bit then runs fine, even on a stone cold engine. I've tried to adjust some more but can't hit the sweet spot. Should I turn it in more or out?
I had the exact same issue.
At just above idle, my X would nose over, sputter a bit (or bog) and then after it revved a bit higher, it would run strong.
I will confess that I am not a carb expert, but I did study the issue in previous posts on this site. I cannot find the link now, but someone recommended turning the A/F screw in a bit to lean the mixture. This fixed my bog-off-idle problem.
When I installed my Glen's permanent A/F screw, I started at the requisite 2.5 turns out. When I noticed the bog, I turned it in (clockwise) in two separate 1/8 turn increments.
The first 1/8 turn-in yielded some improvement, so I added another 1/8 turn-in. No more bog.
You might want to run the screw back in until it lightly seats, then turn out to 2.5, and then back in 1/8 or 1/4 turn. See if that helps.
From what others have written, the A/F screw only affects the low RPM circuit. If yours is bogging at low RPMs, adding a shim may not help.