Hey guys I just recently got into LP trucks, and have the issue of two Toyota trucks not braking well. These two truck have about 5000 hrs. each. Every other day I have to go to this customer and blow out the dust in the drums and perform an Italian brake job (ridding the brakes till they get warm.) These trucks are in a very corrosive environment. Muddy metallic slush. The drums rust up and is a pain my A**. Any thoughts? these trucks are only in there for about 8 more months and then they are getting new trucks with a wet disk brake.