i did a search on leaking fuel posts and found one by truthseeker who had all the same issues i have,old carb was leaking,bought new carb it's leaking also and the engines runs bad and eventually dies.a response to his issue was that the carb is vented and if the gaskets aren't right or it's dirty it will do this,i have a keihen BG26B carb on a gxv620 v twin engine GJAGK-10172678 w serial code ACN008662862 which is different from his,this one will crank cold run a minute then comes the flooding and running bad in general and there are no ventholes or grooves on this intake setup,does anybody have any advice what this could possibly be?i am baffled