I am thinking of buying an older 36' Sea Ray Sedan. The owner has
recently discovered that at about 2500 rpm the engines were cutting
out. His mechanic thinks that it is because there is significant scale
in the gas tanks (aluminum) and it is fouling the fuel system. The
owner has hired a fuel polisher to clean the tanks and fuel. The fuel
filters have been replaced. Are there any other issues that may result
from this? Does this mean that the boat has not been run as much as it
should?

Thanks for your help.