Hey all, new to the site. Glad to be a member. Just got an 08 CRF250 and was told by the owner it needed the valve clearances checked. The bike is very easy to start when cold. I checked them anyway and found the the intake clearanes at 0.04mm left and 0.08mm right. Exhaust was pretty good. I went ahead and shimmed all 4 valves and are now in spec. My problem is when the bike is idling and I twist to full throttle quickly it chokes and goes to stall. If I give quick 1/4 throttle blips it is very responsive and crisp. Im thinking it is most likely carb related, but am not very experienced with bikes and would like some advice on where to start. Thanks in advance.