Well had compression check done and all cylinders are between 85 to 90 I know it's alittle low but the motor runs strong at WOT but at low rpm's and idle she's rough and seems to load up a bit holeshot not as quick as it use to be pulled the plugs and 3 are wet someone told me about a gasket on the side of carb under a plate with 4 screws black and the new ones are brown need to be replaced do you think that will help?What else should I have him check?