The latch on the hood of my JD 6320 has been broken for awhile and I guess when I would hit bumps in the field it would bounce up and down a little and apparently it was rubbing on the side tube of the condenser and eventually rubbed a small hole that allowed the freon to escape from the ac. I removed the condenser and took it to a shop where they soldered the hole shut and then I took it to the AgPro shop near the house to get the ac system evacuated and refilled. It was a Friday afternoon and they worked me in which was great as I was halfway through baling hay when this happened. When I picked up the tractor I noticed there were drops of oil (ac oil) that looked to be dripping on the concrete underneath where the the tech added freon. I was able to get him to come back out and he messed with the shrader valve but it continued to leak. It was close to closing time so he came back out with a pair of pliers and just tightened the cap down real tight and said that's all he could do and to see what happens. Well I needed the tractor so I took it home to finish baling and the ac put out only slightly cool air. When the tech sent me on my way I believe he told me the shrader valve was not serviceable and I would need to buy the entire line which he said could be expensive because of the labor to replace. Any thoughts? Here in TX you gotta have ac when in the cab and I would like to get it taken care of. Does anyone know if the shrader valve can be replaced? I know ac was working great before this whole fiasco started.