I have to agree on the not getting fuel. pull that carb off and verify that its filing the float bowl. When carbs start getting worn the float can hang up on the side of the bowl or other obstacles in there.
I bought one for my raptor. took them forever to get it to me, I crashed it at the dunes nothing hard hill side barrel roll while jumping in a bowl. bent it about 1/2 an inch down pulled back up still not right. They are weak at best in my opinion
good solid piece I have had mine for about 7 years its lived through many crashes and a few seasons of desert racing. It was very handy on the long courses