I took my Farmall H gas tank to severa shops that advertise gas tank cleaning. Several siad no way, too hard to get it clean. One oldtime shop about 30 miles away took the tank two weeks ago and I have called them several times. Never done. On Wed I said I would like to have it on Friday so I go there and he goes in back and get the tank out of the solution and says I should clean it out with gasoline. It was full of black crap like before but all the paint was gone so I know it was boiled. I said I thought you were going to clean it and he says" I can put some acid in it to dissolve the black stuff. I need it several more days. My problem is, when sent to be clean shouldn't it have thouroghly rinsed out an be clean inside.???? Been in business since 1924 it says on sign.. Am I going crazy or is it the rest of the world?????