Bought a new carb for my 2001 Lakota sport 300, after about 3-4 weeks it started to choke down when giving it throttle. I find out that the diaphragm vacuum valve won’t open when I give it throttle, causing it to stay shut and choke out the motor. After opening it up to try and fix it, I can’t see what the hell happend! Does anybody know how to fix this or ever had this problem? Any input would be awesome! Thanks