I have a 1950 Case D that don't get much action. Put some gas in her yesterday and she started right up then in a few minutes stopped and would not restart. Cleaned the sedement bowl and found it was not getting gas. I Back blew the line and gas was there again. Just got it back to the shed and it stopped again. I think I will have to remove the tank for cleaning. What is the best way to clean the inside of this gas tank? Maybe it's just better to send it out somwhere for cleaning. I would like to do it myself if possible. Thanks for looking.