Hey guys, i just bought a 2bbl rochester to replace my mercarb on my 1997 4.3l maxum 1950sr. the choke plate (pretty sure that is what it is called) on the carburetor doesn't seem to be controlled by anything, and also on the back of the carb by the choke plate there is a tube going in that was plugged off on my old carb. i hooked it up and started it aside from these differences and the boat accelerated to full throttle. Can anybody lend some suggestions on what might fix this problem since there seems to be a big thing for this swap. Thanks! also i can put pictures up if you guys need pictures to see what i am talking about.