Have a 78 Eliminator with a Berkley and 460FORD,Just bought recently,,On my 3rd trip out to pyramid I couldnt get the boat to start,,,my see threw glass filter before my (750 double pumper) that is 6 years old out of the box was half full,i noticed before it seems that it was at least 95 pecent ...So i was thinking mechanical fuel pump,,its a stock one from pepboys...Also the trip before i ran a tank dry witch my fuel filter off the tank were covered in dirt.I replaced all fuel line and filters and pump,I can only get the motor to run great at high rpm,all low end rpm or idle is not happing,,Wont idle or start easy at all,wont start with out a few pumps in the carb,i checkt all other components,seem OK.Boat was a turn key before this issue.I'm thinking somthing on my primary side of the holly is gummed up???Maby time carb rebuild..6 year old carb.Boat sat for 3 years but i had two great trips with no problems this month out of 3.