Hello, I am new to the forum and certainly both appreciate and respect any advice that you can offer. I have recently purchased a case 380 (1977 David Brown according to the serial #) and it has 2 issues. The 1st I knew about the 2nd I did not. 1st- the 3pt hitch will not go up or down. I have the operations manual and have tried to work the levers the correct way and I can not get it to move at all. 2nd- I took the tractor for a ride before I bought it and operated the front bucket every way that it could be and everything worked fine. When I got it home and put a load in the front bucket I got NOTHING. Under load it will not lift tilt or do anything. If I keep trying to raise, it wil go up a 1/2 inch at a time and then stop. No leaks. Guy before me said he changed the hydraulic fluid. Now he will not return my calls. I have other case machines and have never had this problem before. Thanks for any help that you can offer. God Bless