I was wondering on the VRO 140 what the 2 jets are on each carb.Is one a low speed jet and the other a high.One has 40 written on it and the other has no clarification of what size it is. Looking to clear up a low speed stutter issue,from 500-2000RPM's the boat runs real rough from 2000 on it runs great ,which jet or what is the best way to clear up this problem. Also what is the screw on the float bowl,is that for float bowl adjustment?Finally the plugs are running pretty wet at low end 0-1/4 throttle.